Typosentinel

Typosentinel

Typosentinel is an intelligent supply chain firewall that actively blocks malicious packages, typosquatting attacks, and supply chain threats in real-time. It transforms from a security scanner into an active protection system with business-aware risk assessment and policy-based blocking.

🚀 Features

Supply Chain Firewall Features

• Active Blocking: Real-time package interception and policy-based blocking
• Business-Aware Risk Assessment: Asset criticality scoring (CRITICAL/INTERNAL/PUBLIC) with intelligent multipliers
• Policy Engine: 5 default security policies with customizable rules and thresholds
• CI/CD Integration: GitHub Actions integration for build-time package blocking
• Multi-Language Support: npm, PyPI, Go modules, Maven, NuGet, and more package managers

Advanced Detection & Analysis

• DIRT Algorithm: Business-aware Dependency Impact Risk Traversal with asset criticality scoring
• Campaign Intelligence: Group related malicious packages into coordinated campaigns
• Behavioral Analysis: Dynamic sandbox analysis with filesystem and network monitoring
• Threat Intelligence: Real-time integration with multiple threat intelligence feeds
• Enhanced Detection: Advanced algorithms for sophisticated typosquatting and supply chain attacks

Integration & Deployment

• Firewall Dashboard: Real-time supply chain firewall monitoring with live activity feed
• REST API: Comprehensive API for CI/CD pipeline integration and policy enforcement
• Organization Scanning: Multi-platform repository scanning (GitHub, GitLab, Bitbucket)
• SBOM Generation: SPDX and CycloneDX software bill of materials support
• Docker Deployment: Complete containerized deployment with monitoring and alerting

Performance & Reliability

• Real-time Processing: Sub-second response times for policy enforcement
• Enterprise Ready: Authentication, RBAC, audit logging, and compliance features
• Policy Reporting: Detailed policy violation reports with business impact analysis
• Multi-format Output: JSON, YAML, SARIF, table, and terminal output with firewall metrics

📦 Installation

Binary Releases

Download the latest release from GitHub Releases:

# Linux
wget https://github.com/Alivanroy/Typosentinel/releases/latest/download/typosentinel-linux-amd64
chmod +x typosentinel-linux-amd64
sudo mv typosentinel-linux-amd64 /usr/local/bin/typosentinel

# macOS
wget https://github.com/Alivanroy/Typosentinel/releases/latest/download/typosentinel-darwin-amd64
chmod +x typosentinel-darwin-amd64
sudo mv typosentinel-darwin-amd64 /usr/local/bin/typosentinel

# Windows
# Download typosentinel-windows-amd64.exe and add to PATH

From Source

git clone https://github.com/Alivanroy/Typosentinel.git
cd Typosentinel
make build
# Binary will be created as ./typosentinel

Docker Deployment

# One-line build and run (API on :8080)
docker build -t typosentinel-api . && docker run --rm -p 8080:8080 typosentinel-api

# One-line CLI scan using Docker (mounts current directory)
docker build -t typosentinel . && docker run --rm -v "$PWD:/scan" typosentinel ./typosentinel scan /scan --output json --supply-chain --advanced

# Compose: API + Postgres + optional monitoring
docker compose up -d

Prebuilt image (GHCR):

docker pull ghcr.io/alivanroy/typosentinel-api:latest
docker run --rm -p 8080:8080 ghcr.io/alivanroy/typosentinel-api:latest

Access Points:

• Web Interface: http://localhost:3000
• API Server: http://localhost:8080
• API Playground: http://localhost:8080/api

CLI Quick Start

# Build native CLI
go build -o build/typosentinel .
./build/typosentinel version
./build/typosentinel scan . --output json --supply-chain --advanced

Force registry for specific ecosystem:

```bash
./build/typosentinel scan ./my-go-project --registry go --output json
./build/typosentinel scan ./my-java-project --registry maven --output json

One-line Docker CLI (Windows PowerShell)

docker build -t typosentinel . ; docker run --rm -v "${PWD}:/scan" typosentinel ./typosentinel scan /scan --output json --supply-chain --advanced

For detailed Docker deployment instructions, see [DOCKER.md](DOCKER.md).

## 🔧 Quick Start

### Basic Usage

```bash
# Scan a project directory
typosentinel scan /path/to/project

# Scan with enhanced detection
typosentinel scan --enhanced /path/to/project

# Scan specific package managers
typosentinel scan --package-manager npm /path/to/project
typosentinel scan --package-manager pypi /path/to/project

# Output results to file
typosentinel scan --output report.json /path/to/project

# Enable verbose logging
typosentinel scan --verbose /path/to/project

Advanced Scanning

# Supply chain security scan
typosentinel supply-chain scan-advanced /path/to/project \
  --build-integrity \
  --threat-intel \
  --risk-threshold high

# Organization scanning
typosentinel scan-org github \
  --org company-name \
  --token $GITHUB_TOKEN \
  --max-repos 100

# SBOM generation
typosentinel scan /path/to/project \
  --sbom-format spdx \
  --sbom-output project-sbom.spdx.json

🌐 Web Interface & Server

Starting the Web Server

# Start the server with default settings
typosentinel server

# Start with custom configuration
typosentinel server --port 8080 --host 0.0.0.0

# Development mode with enhanced logging
typosentinel server --dev --verbose

API Authentication

Authentication is controlled via environment variables:

• API_AUTH_ENABLED: set to true or 1 to require a bearer token
• API_KEYS: comma‑separated list of allowed API keys (e.g., key1,key2)

Example curl with bearer token:

curl -s -X POST http://localhost:8080/v1/analyze \
  -H "Authorization: Bearer key1" \
  -H "Content-Type: application/json" \
  -d '{"package_name":"express","registry":"npm"}'

Docker run with auth enabled:

docker build -t typosentinel-api . && \
docker run --rm -p 8080:8080 \
  -e API_AUTH_ENABLED=true \
  -e API_KEYS=key1,key2 \
  typosentinel-api

Note: demo‑only endpoints (/api/v1/vulnerabilities, /api/v1/dashboard/*) return 501 Not Implemented.

Firewall Dashboard Features

• 🛡️ Firewall Status: Real-time supply chain firewall monitoring with live activity feed
• 📊 Security Metrics: Policy violations, blocked packages, and threat intelligence
• 🔍 Package Analysis: Interactive package scanning with business-aware risk assessment
• 📈 Activity Feed: Live stream of security events and policy enforcements
• ⚙️ Policy Management: Web-based configuration of security policies and thresholds
• 📋 Reports: Downloadable security reports with business impact analysis

API Endpoints

# Health and status
GET /health
GET /v1/status
GET /v1/stats

# Analyze a single package (demo mode)
POST /v1/analyze
{
  "package_name": "express",
  "registry": "npm"
}

# Batch analysis (demo mode)
POST /v1/analyze/batch
{
  "packages": [
    {"package_name": "express", "registry": "npm"},
    {"package_name": "test-package", "registry": "npm"}
  ]
}

# Vulnerabilities (mock data)
GET /api/v1/vulnerabilities?severity=critical

# Dashboard metrics (mock data)
GET /api/v1/dashboard/metrics
GET /api/v1/dashboard/performance

Current Status & Honest Metrics

• API server endpoints validated end-to-end with automated tests
• Legitimate packages (e.g., express) return risk_level: 0 and risk_score: 0.0
• Suspicious names (e.g., test-package, very short, numeric-included) produce appropriate threats/warnings
• Webhook endpoints scaffolded; some provider routes operate in demo mode
• Unit test coverage highlights:
  • pkg/types: 100%
  • internal/supplychain: ~54%
  • Other modules vary; several integration tests are skipped in demo mode
• API tests (tag api) pass; batch and rate limiting behavior validated
• Demo mode is enabled for several endpoints with mock data responses

🔍 Detection Methods

Core Detection Algorithms

1. String Similarity Analysis

• Levenshtein Distance: Character-level edit distance calculation
• Jaro-Winkler Similarity: Weighted string matching with prefix bias
• Longest Common Subsequence (LCS): Sequence-based similarity detection
• Cosine Similarity: Vector-based text similarity
• N-Gram Analysis: Character and word n-gram comparison

2. Visual Similarity Detection

• Unicode Homoglyph Detection: Visually similar character identification
• Character Substitution Patterns: Common typo pattern recognition
• Script Mixing Detection: Multiple Unicode script usage
• Confusable Character Mapping: International character confusion

3. Behavioral Analysis

• Dynamic Sandbox Analysis: Runtime behavior monitoring in isolated containers
• Filesystem Activity: File creation, modification, and access patterns
• Network Communication: Outbound connections and data exfiltration attempts
• Process Behavior: Suspicious process creation and execution patterns
• Code Execution: Eval, shell execution, and crypto mining detection

4. Campaign Intelligence

• Package Similarity: Code and metadata similarity analysis
• Author Clustering: Maintainer identity and behavior patterns
• Network IOCs: Shared domains, IPs, and infrastructure
• Campaign Grouping: Automatic grouping of related malicious packages

5. Risk Scoring

• Multi-Factor Assessment: Vulnerability, behavior, and campaign risk factors
• Configurable Weights: Customizable risk factor importance
• Confidence Scoring: Reliability assessment of detection results
• Automatic Recommendations: Actionable security recommendations

📊 Honest Performance Metrics

Measured locally (Windows 11, i7‑12700H, Go 1.23):

• DetectEnhanced: ~246µs/op (mixed cases: expresss/lodahs/recat/axois)
• DetectEnhanced (homoglyphs): ~157µs/op (Cyrillic/Greek/visual substitutions)
• Allocations: 636 allocs/op (DetectEnhanced), 486 allocs/op (homoglyphs)
• Memory: ~40KB/op (DetectEnhanced), ~31KB/op (homoglyphs)

To reproduce: go test -bench=. -benchmem ./tests/benchmarks/...

Throughput benchmarks:

• Small project (50 deps): ~6.75ms/run, ~1.13MB alloc, ~14.8k allocs/run
• Medium project (200 deps): ~33.6ms/run, ~4.54MB alloc, ~59.1k allocs/run

Memory profile (typical):

• Base: ~15MB
• Per 100 packages: ~8MB additional
• Peak during enhanced analysis: ~2× base

Validated summary:

🚀 CI/CD Integration

GitHub Actions Supply Chain Firewall

# .github/workflows/supply-chain-firewall.yml
name: Supply Chain Firewall
on: [push, pull_request]

jobs:
  supply-chain-protection:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Supply Chain Firewall
        uses: Alivanroy/Typosentinel/.github/actions/supply-chain-firewall@main
        with:
          policy-config: |
            policies:
              - name: "Block Critical Risk"
                condition: "risk_score >= 0.9"
                action: "BLOCK"
              - name: "Alert Typosquatting"
                condition: "typosquatting_score >= 0.8"
                action: "ALERT"
          asset-criticality: "INTERNAL"
          fail-on-policy-violation: true

GitLab CI Supply Chain Protection

# .gitlab-ci.yml
supply_chain_firewall:
  stage: security
  image: alpine:latest
  before_script:
    - apk add --no-cache wget
    - wget -O typosentinel https://github.com/Alivanroy/Typosentinel/releases/latest/download/typosentinel-linux-amd64
    - chmod +x typosentinel
  script:
    - ./typosentinel supply-chain policy-enforce --config policies.yaml --asset-criticality INTERNAL .
  artifacts:
    reports:
      sast: gl-sast-report.json
    expire_in: 1 week
  only:
    - merge_requests
    - main

📖 Documentation

Core Documentation

• User Guide - Supply chain firewall configuration and usage
• API Documentation - REST API for policy management and enforcement
• Docker Deployment Guide - Complete containerized firewall deployment

Advanced Features

• Supply Chain Policy Engine - Business-aware policy enforcement system
• DIRT Algorithm - Dependency Impact Risk Traversal with asset criticality
• Campaign Intelligence - Coordinated threat campaign detection
• Business-Aware Risk Assessment - Asset criticality scoring and risk multipliers

Development & Deployment

• Contributing Guide - How to contribute to the project
• Security Policy - Security vulnerability reporting

🛠️ Development

Prerequisites

• Go 1.23 or later
• Make (optional)
• Docker (for containerized development)

Setup Development Environment

git clone https://github.com/Alivanroy/Typosentinel.git
cd Typosentinel
make dev-setup

Available Make Targets

make help                # Show all available targets
make build              # Build the binary
make test               # Run tests
make test-coverage      # Run tests with coverage
make lint               # Run linters
make fmt                # Format code
make clean              # Clean build artifacts
make docker-build       # Build Docker image

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🔒 Security

For security vulnerabilities, please see our Security Policy.

📞 Support

• Issues: GitHub Issues
• Discussions: GitHub Discussions

🙏 Acknowledgments

• Thanks to all contributors who have helped improve this project
• Inspired by the need for better supply chain security
• Built with ❤️ for the open source community

Made with ❤️ by Alivanroy

CLI Flags

• --output {json|sarif|table}: choose output format (SARIF requires tooling)
• --supply-chain: enable supply chain risk analysis
• --advanced: enable enhanced detection algorithms
• --threshold <0..1>: similarity threshold for typosquatting
• --registry <npm|pypi|go|maven>: force registry when auto-detection isn’t possible Examples:

# NPM
./build/typosentinel scan ./examples/npm-clean --output json
./build/typosentinel scan ./examples/npm-vulnerable --output json

# PyPI
./build/typosentinel scan ./examples/pypi-clean --output json
./build/typosentinel scan ./examples/pypi-vulnerable --output json

# Go
./build/typosentinel scan ./examples/go-minimal --registry go --output json

# Maven
./build/typosentinel scan ./examples/maven-minimal --registry maven --output json