View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99 followers · 24 following

Achievements

Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2

Achievements

Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2

Organizations

@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
jcsec-security/README.md

Hi there 👋

📫 Looking for someone to audit your Smart Contract? 📫

I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.

In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.

Current expertise:

  • Solidity/EVM
  • CosmWasm smart contracts, Rust

🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.

👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.

Important

Would you like to know more about my services? Check out my website!

Pinned Loading

  1. smart-contract-auditssmart-contract-auditsPublic

    List of some of the published smart contract audits in which I have participated in the past.

    4 1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic

    Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    105 17

  3. Faillapop/faillapopFaillapop/faillapopPublic

    Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity 150 11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic

    Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    9 1

  5. all-things-reentrancyall-things-reentrancyPublic

    Workshop about the different types of reentrancy attacks

    Solidity 136 32

  6. learn-solidity-securitylearn-solidity-securityPublic

    Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity 2 1

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99
followers
 · 24
following

Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Organizations
@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


Content in all repositories owned by your account will be closed.


Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

Report abuse

Contact GitHub support about this user’s behavior.
Learn more about reporting abuse.

Report abuse
jcsec-security/README.md
Hi there 👋
📫 Looking for someone to audit your Smart Contract? 📫
I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.
In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.
Current expertise:
  • Solidity/EVM
  • CosmWasm smart contracts, Rust
🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.
👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.
Important
Would you like to know more about my services?
Check out my website!

Pinned
Loading
  1. smart-contract-auditssmart-contract-auditsPublic
    
List of some of the published smart contract audits in which I have participated in the past.

    
4

1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic
    
Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    
105

17

  3. Faillapop/faillapopFaillapop/faillapopPublic
    
Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity
150

11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic
    
Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    
9

1

  5. all-things-reentrancyall-things-reentrancyPublic
    
Workshop about the different types of reentrancy attacks

    Solidity
136

32

  6. learn-solidity-securitylearn-solidity-securityPublic
    
Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity
2

1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99
followers
 · 24
following

Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Organizations
@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


Content in all repositories owned by your account will be closed.


Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

Report abuse

Contact GitHub support about this user’s behavior.
Learn more about reporting abuse.

Report abuse
jcsec-security/README.md
Hi there 👋
📫 Looking for someone to audit your Smart Contract? 📫
I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.
In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.
Current expertise:
  • Solidity/EVM
  • CosmWasm smart contracts, Rust
🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.
👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.
Important
Would you like to know more about my services?
Check out my website!

Pinned
Loading
  1. smart-contract-auditssmart-contract-auditsPublic
    
List of some of the published smart contract audits in which I have participated in the past.

    
4

1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic
    
Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    
105

17

  3. Faillapop/faillapopFaillapop/faillapopPublic
    
Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity
150

11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic
    
Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    
9

1

  5. all-things-reentrancyall-things-reentrancyPublic
    
Workshop about the different types of reentrancy attacks

    Solidity
136

32

  6. learn-solidity-securitylearn-solidity-securityPublic
    
Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity
2

1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99
followers
 · 24
following

Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Organizations
@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


Content in all repositories owned by your account will be closed.


Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

Report abuse

Contact GitHub support about this user’s behavior.
Learn more about reporting abuse.

Report abuse
jcsec-security/README.md
Hi there 👋
📫 Looking for someone to audit your Smart Contract? 📫
I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.
In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.
Current expertise:
  • Solidity/EVM
  • CosmWasm smart contracts, Rust
🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.
👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.
Important
Would you like to know more about my services?
Check out my website!

Pinned
Loading
  1. smart-contract-auditssmart-contract-auditsPublic
    
List of some of the published smart contract audits in which I have participated in the past.

    
4

1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic
    
Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    
105

17

  3. Faillapop/faillapopFaillapop/faillapopPublic
    
Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity
150

11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic
    
Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    
9

1

  5. all-things-reentrancyall-things-reentrancyPublic
    
Workshop about the different types of reentrancy attacks

    Solidity
136

32

  6. learn-solidity-securitylearn-solidity-securityPublic
    
Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity
2

1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99
followers
 · 24
following

Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Organizations
@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


Content in all repositories owned by your account will be closed.


Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

Report abuse

Contact GitHub support about this user’s behavior.
Learn more about reporting abuse.

Report abuse
jcsec-security/README.md
Hi there 👋
📫 Looking for someone to audit your Smart Contract? 📫
I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.
In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.
Current expertise:
  • Solidity/EVM
  • CosmWasm smart contracts, Rust
🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.
👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.
Important
Would you like to know more about my services?
Check out my website!

Pinned
Loading
  1. smart-contract-auditssmart-contract-auditsPublic
    
List of some of the published smart contract audits in which I have participated in the past.

    
4

1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic
    
Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    
105

17

  3. Faillapop/faillapopFaillapop/faillapopPublic
    
Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity
150

11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic
    
Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    
9

1

  5. all-things-reentrancyall-things-reentrancyPublic
    
Workshop about the different types of reentrancy attacks

    Solidity
136

32

  6. learn-solidity-securitylearn-solidity-securityPublic
    
Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity
2

1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99
followers
 · 24
following

Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Organizations
@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


Content in all repositories owned by your account will be closed.


Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

Report abuse

Contact GitHub support about this user’s behavior.
Learn more about reporting abuse.

Report abuse
jcsec-security/README.md
Hi there 👋
📫 Looking for someone to audit your Smart Contract? 📫
I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.
In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.
Current expertise:
  • Solidity/EVM
  • CosmWasm smart contracts, Rust
🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.
👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.
Important
Would you like to know more about my services?
Check out my website!

Pinned
Loading
  1. smart-contract-auditssmart-contract-auditsPublic
    
List of some of the published smart contract audits in which I have participated in the past.

    
4

1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic
    
Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    
105

17

  3. Faillapop/faillapopFaillapop/faillapopPublic
    
Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity
150

11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic
    
Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    
9

1

  5. all-things-reentrancyall-things-reentrancyPublic
    
Workshop about the different types of reentrancy attacks

    Solidity
136

32

  6. learn-solidity-securitylearn-solidity-securityPublic
    
Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity
2

1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99
followers
 · 24
following

Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Organizations
@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


Content in all repositories owned by your account will be closed.


Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

Report abuse

Contact GitHub support about this user’s behavior.
Learn more about reporting abuse.

Report abuse
jcsec-security/README.md
Hi there 👋
📫 Looking for someone to audit your Smart Contract? 📫
I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.
In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.
Current expertise:
  • Solidity/EVM
  • CosmWasm smart contracts, Rust
🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.
👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.
Important
Would you like to know more about my services?
Check out my website!

Pinned
Loading
  1. smart-contract-auditssmart-contract-auditsPublic
    
List of some of the published smart contract audits in which I have participated in the past.

    
4

1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic
    
Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    
105

17

  3. Faillapop/faillapopFaillapop/faillapopPublic
    
Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity
150

11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic
    
Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    
9

1

  5. all-things-reentrancyall-things-reentrancyPublic
    
Workshop about the different types of reentrancy attacks

    Solidity
136

32

  6. learn-solidity-securitylearn-solidity-securityPublic
    
Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity
2

1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
View jcsec-security's full-sized avatar
🎯
Focusing
🎯
Focusing
99
followers
 · 24
following

Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Achievements
Achievement: YOLOAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Starstruckx2
Organizations
@Faillapop

Block or report jcsec-security

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


Content in all repositories owned by your account will be closed.


Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

Report abuse

Contact GitHub support about this user’s behavior.
Learn more about reporting abuse.

Report abuse
jcsec-security/README.md
Hi there 👋
📫 Looking for someone to audit your Smart Contract? 📫
I have been breaking things professionally since early 2016. My whole career has been focused on offensive security with a strong background doing pen-testing of "traditional" stuff like web, mobile, or cloud, but since 2021, I have been working full-time as a Smart Contract auditor.
In addition, I lecture on Solidity/EVM security to 🌱blockchain students🌱 at some institutions and give workshops/talks on the topic occasionally.
Current expertise:
  • Solidity/EVM
  • CosmWasm smart contracts, Rust
🔍🔓 Former Matter Labs/zkSync, Oak Security and Halborn. Available for "private audits", and security engineering consultancy as freelance researcher.
👓📚 Teaching Smart Contract security at University of Malaga and University of Porto.
Important
Would you like to know more about my services?
Check out my website!

Pinned
Loading
  1. smart-contract-auditssmart-contract-auditsPublic
    
List of some of the published smart contract audits in which I have participated in the past.

    
4

1

  2. CosmWasm-audit-roadmapCosmWasm-audit-roadmapPublic
    
Roadmap to get up to speed with CosmWasm smart contract audits and security vulnerabilities

    
105

17

  3. Faillapop/faillapopFaillapop/faillapopPublic
    
Vulnerable-by-design solidity protocol to help Web3 security enthusiasts practice their skills in an environment closer to real live.

    Solidity
150

11

  4. cosmwasm-security-spotlightcosmwasm-security-spotlightPublic
    
Posts and labs to learn CosmWasm smart contract security vulnerabilities and audit

    
9

1

  5. all-things-reentrancyall-things-reentrancyPublic
    
Workshop about the different types of reentrancy attacks

    Solidity
136

32

  6. learn-solidity-securitylearn-solidity-securityPublic
    
Course material about common vulnerabilities, security and audits of Solidity smart contracts that I use during my lectures

    Solidity
2

1