Blacklight

Blacklight is a powerful secret, keys and sensitive data scanning tool that helps you detect and prevent sensitive information leaks in your codebase, databases, cloud storage, and communication platforms.

Features

• Multi-Source Scanning

  • Local files and directories
  • Databases (PostgreSQL, MySQL)
  • AWS S3 buckets
  • Slack workspace messages and files
  • Cloud Storage (Google Drive, Dropbox)
  • Git repositories

• Advanced Detection

  • Pattern-based secret detection
  • Context-aware scanning
  • Multi-language support
  • Configurable severity levels
  • Rule categorization
  • Smart file format detection

• Supported File Formats

  • Plain text files
  • JSON files (with nested object support)
  • YAML files (with nested object support)
  • XML files (with attribute scanning)
  • INI/Config files
  • Environment files (.env)
  • Configuration files

• User Experience

  • Cross-platform compatibility (Windows, Linux, macOS)
  • Beautiful table output with go-pretty formatting
  • Color-coded severity indicators
  • Detailed violation reporting
  • Rich context for findings

Installation

Quick Install (Linux/macOS)

# macOS (Apple Silicon)
curl -Lo blacklight https://github.com/adaptive-scale/blacklight/releases/latest/download/blacklight-darwin-arm64 && \
chmod +x blacklight && \
sudo mv blacklight /usr/local/bin/
# macOS (Intel)
curl -Lo blacklight https://github.com/adaptive-scale/blacklight/releases/latest/download/blacklight-darwin-amd64 && \
chmod +x blacklight && \
sudo mv blacklight /usr/local/bin/
# Linux (x86_64)
curl -Lo blacklight https://github.com/adaptive-scale/blacklight/releases/latest/download/blacklight-linux-amd64 && \
chmod +x blacklight && \
sudo mv blacklight /usr/local/bin/
# Linux (ARM64)
curl -Lo blacklight https://github.com/adaptive-scale/blacklight/releases/latest/download/blacklight-linux-arm64 && \
chmod +x blacklight && \
sudo mv blacklight /usr/local/bin/
# Verify installation
blacklight version

Using Go

# Using go install
go install github.com/adaptive-scale/blacklight@latest
# Or clone and build
git clone https://github.com/adaptive-scale/blacklight.git
cd blacklight
make build

Docker

# Pull the latest image
docker pull adaptivescale/blacklight:latest
# Run a scan
docker run -v $(pwd):/workspace adaptivescale/blacklight:latest scan /workspace

Windows

Download the appropriate .exe file from our releases page and add it to your PATH.

Verifying the Installation

After installation, verify that Blacklight is working correctly:

# Check version
blacklight version
# View help
blacklight --help
# Run a test scan
blacklight scan --help

Usage

Basic Usage

# Scan a directory
blacklight scan /path/to/directory
# Scan with verbose output
blacklight scan /path/to/directory --verbose
# Scan a database
blacklight scan --db "postgresql://user:pass@localhost:5432/dbname"# Scan an S3 bucket
blacklight scan --s3 "s3://bucket-name"# Scan cloud storage
blacklight scan --drive "gdrive://folder-id"

Rule Management

# List all rules
blacklight rules list
# List rules by type
blacklight rules list --type cloud
# List rules by severity
blacklight rules list --severity 3
# Add a new rule
blacklight rules add --name "Custom API Key" \
--regex "api_key_[a-zA-Z0-9]{32}" \
--severity 2 \
--type "secret"

Slack Workspace Scanning

Blacklight includes a powerful Slack scanner that can detect secrets and sensitive information in:

• Channel messages (public and private)
• Message threads
• Direct messages (DMs)
• Group messages
• Shared files
• File comments

Setup

1. Create a Slack App at https://api.slack.com/apps
2. Add the following OAuth scopes:

   channels:history - View messages and other content in public channels
   channels:read - View basic information about public channels
   files:read - View files shared in channels and conversations
   groups:history - View messages and other content in private channels
   groups:read - View basic information about private channels
   im:history - View messages and other content in direct messages
   im:read - View basic information about direct messages
   mpim:history - View messages and other content in group direct messages
   mpim:read - View basic information about group direct messages
   

3. Install the app to your workspace
4. Copy the Bot User OAuth Token (starts with xoxb-)

Usage

# Basic scan of all accessible channels
blacklight slack --token xoxb-your-token
# Scan specific channels
blacklight slack --token xoxb-your-token --channels C01234567,C89012345
# Scan recent messages
blacklight slack --token xoxb-your-token --days 7
# Full scan including threads and files
blacklight slack --token xoxb-your-token --include-threads --include-files

Configuration Options

Option	Description	Default
--token	Slack Bot User OAuth Token (required)	-
--channels	Comma-separated list of channel IDs	All accessible
--days	Number of days of history to scan	30
--include-threads	Scan message threads	false
--include-files	Scan file contents	false
--exclude-archived	Skip archived channels	true

Performance Considerations

• File scanning is disabled by default to improve performance
• Files larger than 10MB are skipped
• Use the --days flag to limit the scan window
• Specify channels to scan for faster results

Cloud Storage Scanning

Blacklight can scan files in various cloud storage services for secrets and sensitive information:

Implemented Providers

• Google Drive (gdrive://)

  • Scans files in specified folders
  • Supports file content analysis
  • Respects file size limits
  • OAuth2 authentication
  • Automatic file format detection
  • Recursive folder scanning

• Dropbox (dropbox://)

  • Full folder scanning
  • File content analysis
  • Path-based access
  • Access token authentication
  • Smart file format handling
  • Size-based file filtering

Coming Soon

• OneDrive (onedrive://) - In development
• Box (box://) - Planned

Authentication

Each provider requires appropriate authentication:

# Google Drive - OAuth2 client configurationexport CLOUD_TOKEN='{"client_id":"...","client_secret":"...","redirect_uris":["..."]}'# Dropbox - Access Tokenexport CLOUD_TOKEN="your-dropbox-access-token"

Usage Examples

# Scan Google Drive folder
blacklight scan --drive "gdrive://folder-id"# Scan Dropbox folder
blacklight scan --drive "dropbox://path/to/folder"# Include shared files (Google Drive)
blacklight scan --drive "gdrive://folder-id" --include-shared
# Limit scan history
blacklight scan --drive "dropbox://folder" --days 7
# Adjust file size limit
blacklight scan --drive "gdrive://folder-id" --max-size 5242880 # 5MB

Configuration Options

Option	Description	Default
--drive, -r	Cloud storage URL to scan	-
--include-shared	Include shared files	false
--days	Days of history to scan	30
--max-size	Maximum file size (bytes)	10MB

File Format Support

The cloud storage scanner automatically detects and processes various file formats:

Format	Extensions	Detection
JSON	.json	Extension + Content
YAML	.yaml, .yml	Extension + Content
XML	.xml	Extension
INI	.ini, .conf, .config	Extension
ENV	.env	Extension
Text	others	Default

Performance Considerations

• Files larger than the max-size limit are skipped
• Use --days to limit scan scope
• Specify precise folder paths for faster scans
• Token expiration is handled automatically
• File format detection optimizes scanning

Security Notes

• Tokens should be kept secure and not shared
• Use read-only access tokens when possible
• Consider using environment variables for token storage
• Regularly rotate access tokens
• Ensure proper access permissions

Rule Types

Blacklight organizes its scanning rules into the following categories:

Authentication & Authorization

• auth: Authentication tokens, passwords, OAuth credentials
• key: Cryptographic keys (RSA, DSA, PGP, SSH)

Cloud & Infrastructure

• cloud: Cloud provider credentials (AWS, Azure, GCP)
• container: Container platform secrets (Docker, Kubernetes)
• iac: Infrastructure as Code secrets (Terraform)
• cdn: Content Delivery Network tokens

APIs & Services

• api: Generic and service-specific API keys
• monitoring: Monitoring service tokens (NewRelic, Rollbar)
• ci: CI/CD platform credentials
• vcs: Version Control System tokens (GitHub, GitLab)

Payment & Financial

• payment: Payment gateway credentials
• pci: Payment Card Industry data
• ecommerce: E-commerce platform tokens

Data & Storage

• database: Database credentials and endpoints
• messaging: Message queue credentials
• package: Package registry tokens

Other

• secret: Generic secrets and environment variables
• social: Social media platform tokens
• security: Security-related credentials
• config: Configuration file secrets
• ai: AI service credentials

Rule Configuration

Rules are stored in ~/.blacklight/rules.yaml. Each rule has the following properties:

Property	Description	Required
id	Unique identifier	Yes
name	Human-readable name	Yes
description	What the rule detects	No
regex	Detection pattern	Yes
severity	1 (low) to 3 (high)	Yes
type	Category from above	Yes
disabled	Skip this rule	No

Example Rule File

- id: "aws_access_key"name: "AWS Access Key"description: "Amazon Web Services access key ID"regex: "AKIA[0-9A-Z]{16}"severity: 3type: "cloud"disabled: false
- id: "stripe_key"name: "Stripe API Key"description: "Stripe secret API key"regex: "sk_live_[0-9a-zA-Z]{24}"severity: 3type: "payment"disabled: false

Output Format

Blacklight provides rich, color-coded output:

[Severity 3]: AWS Access Key Found
Location: slack://channel/C0123456/message/1234567890.123
Context: ...config = { accessKeyId: "AKIAXXXXXXXXXXXXXXXX", region: "us-east-1" }...
Match: AKIAXXXXXXXXXXXXXXXX
--------------------------------------------------------------------------------

The table output uses go-pretty for enhanced readability:

╭──────────────────────────┬──────────┬──────────┬─────────┬───────────────────────────────────╮
│ NAME │ TYPE │ SEVERITY │ STATUS │ PATTERN │
├──────────────────────────┼──────────┼──────────┼─────────┼───────────────────────────────────┤
│ AWS Access Key │ cloud │ 3 │ Enabled │ AKIA[0-9A-Z]{16} │
│ Stripe API Key │ payment │ 3 │ Enabled │ sk_live_[0-9a-zA-Z]{24} │
╰──────────────────────────┴──────────┴──────────┴─────────┴───────────────────────────────────╯

Default Rules

Blacklight comes with a comprehensive set of pre-configured rules for detecting various types of secrets and sensitive information:

Authentication & Authorization

Rule Name	Description	Severity
AWS Access Key	Amazon Web Services access key ID	High
AWS Secret Key	Amazon Web Services secret access key	High
Generic API Key	Generic API key patterns	Medium
JWT Token	JSON Web Token	Medium
Basic Auth	Basic Authentication credentials	High
OAuth Client Secret	OAuth 2.0 client secret	High
OAuth Access Token	OAuth 2.0 access token	High
SSH Private Key	SSH private key content	High

Cloud Services

Rule Name	Description	Severity
Azure Storage Account Key	Azure storage account access key	High
GCP Service Account	Google Cloud Platform service account key	High
Firebase Database URL	Firebase realtime database URL	Medium
Heroku API Key	Heroku platform API key	High
Digital Ocean Token	DigitalOcean API token	High
Cloudflare API Key	Cloudflare API key and token	High
AWS Session Token	AWS temporary session token	High

Payment & Financial

Rule Name	Description	Severity
Stripe API Key	Stripe secret API key	High
Stripe Restricted Key	Stripe restricted API key	High
PayPal Access Token	PayPal OAuth2 access token	High
Square Access Token	Square OAuth2 access token	High
Credit Card Number	Credit card number patterns	High

Database & Storage

Rule Name	Description	Severity
PostgreSQL Connection	PostgreSQL connection string	High
MySQL Connection	MySQL connection string	High
MongoDB Connection	MongoDB connection URI	High
Redis Connection	Redis connection string	High
Elasticsearch Connection	Elasticsearch connection string	Medium

Communication & Messaging

Rule Name	Description	Severity
Slack Token	Slack API token and webhook URL	High
Slack Webhook	Slack incoming webhook URL	Medium
Discord Token	Discord bot token	High
Discord Webhook	Discord webhook URL	Medium
Twilio API Key	Twilio API key	High
SendGrid API Key	SendGrid API key	High

Development & CI/CD

Rule Name	Description	Severity
GitHub Token	GitHub personal access token	High
GitLab Token	GitLab personal access token	High
NPM Token	NPM authentication token	Medium
Docker Registry	Docker registry credentials	Medium
CircleCI Token	CircleCI API token	High
Jenkins Token	Jenkins API token	High

AI & Machine Learning

Rule Name	Description	Severity
OpenAI API Key	OpenAI API key	High
Hugging Face Token	Hugging Face API token	High
Anthropic API Key	Anthropic API key	High
Cohere API Key	Cohere API key	High
Replicate API Token	Replicate API token	High

Analytics & Monitoring

Rule Name	Description	Severity
Google Analytics	Google Analytics API key	Medium
New Relic Key	New Relic license key	High
Datadog API Key	Datadog API key	High
Sentry DSN	Sentry client key	Medium
Mixpanel Token	Mixpanel project token	Medium

Generic Patterns

Rule Name	Description	Severity
Private Key	Generic private key content	High
Password in URL	Password in URL parameters	High
Environment Variable	Hardcoded environment variables	Medium
IP Address	Private IP addresses	Low
Internal Path	Internal system paths	Low

Custom Rules

You can add your own custom rules by creating a file at ~/.blacklight/rules.yaml:

- id: "custom_api_key"name: "Custom API Key"description: "Detects custom API key pattern"regex: "myapi_[a-zA-Z0-9]{32}"severity: 2type: "api"disabled: false
- id: "internal_token"name: "Internal Service Token"description: "Internal service authentication token"regex: "int_[a-zA-Z0-9]{24}"severity: 3type: "auth"disabled: false

Rule Properties

Property	Description	Required	Example
id	Unique identifier	Yes	aws_access_key
name	Human-readable name	Yes	"AWS Access Key"
description	What the rule detects	No	"Amazon Web Services access key ID"
regex	Detection pattern	Yes	AKIA[0-9A-Z]{16}
severity	1 (low) to 3 (high)	Yes	3
type	Category from types list	Yes	"cloud"
disabled	Skip this rule	No	false

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

Copyright © 2025 Debarshi Basak

Licensed under the Apache License, Version 2.0