FangDefang

A browser extension for security professionals to defang and fang URLs, domains, IPs, and emails

# FangDefang - IoC Defanging Tool ## Overview FangDefang is a browser extension that helps security professionals, analysts, and researchers safely handle potentially malicious IoCs. The extension provides tools to defang (make safe) and fang (restore) URLs, domains, IP addresses, and email addresses, making it easier to share and analyze potentially dangerous IoCs without the risk of accidental interaction. ## Key Features ### IoC Defanging - Convert IoCs to a safe format by replacing dangerous characters - Support for multiple IoC types: - URLs: - `http://` → `hxxp://` - `https://` → `hxxps://` - `.` → `[.]` - `:` → `[:]` - Domains: - `example.com` → `example[.]com` - IP Addresses: - `192.168.1.1` → `192[.]168[.]1[.]1` - Email Addresses: - `user@example.com` → `user[@]example[.]com` - Preserve IoC structure while making it non-interactive - Handle complex IoCs with various components ### IoC Fangging - Restore defanged IoCs to their original format - Support for multiple defanging patterns - Maintain IoC integrity during restoration - Handle partially defanged IoCs ### User Interface - Clean, modern interface with dark and light themes - Two processing modes: - Single IoC processing - Batch processing for multiple IoCs - Easy-to-use controls with clear operation toggles - Copy to clipboard functionality - Export results to txt file ### Context Menu Integration - Right-click option that allows to copy an IoC defanged! - Quick access to defanging functionality - Copy defanged IoCs directly to clipboard ### Customization - Theme selection (dark/light) - Toggle context menu integration - Configure batch processing settings ## Use Cases - Security researchers sharing malicious IoCs - Incident response teams documenting threats - Malware analysts exchanging samples - Security training and education - Threat intelligence sharing - SOC analysts documenting incidents - Forensic investigators preserving evidence ## Privacy & Security - All processing happens locally in your browser - No data is sent to external servers - No tracking or analytics - Minimal permissions required ## Installation 1. Download the extension from the Chrome Web Store 2. Click "Add to Chrome" 3. Pin the extension to your toolbar for easy access ## Support For support, feature requests, or bug reports, please contact me here, via Email or on my Socials.