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Community threat intelligence platform for indicators, pulses, malware, and attack research.

Threat intelligence search service for checking IPs, domains, hashes, and security indicators.

Fortinet threat intelligence portal for security updates, IP reputation, malware, and web filtering data.

Open source threat intelligence platform for analyzing observables, files, and security indicators.

CyberArsenal is a developer resource for coding, documentation, communities, security research, or software tools.

GitHub collection of APT reports, threat actor notes, and security research documents.

GitHub awesome list collecting OSINT tools, datasets, training links, and research resources.

Malware research archive with papers, samples, writeups, and historical security material.

Open source intelligence toolkit for gathering and analyzing information from websites and online sources.

Breach hunting tool that checks emails against breach data sources and local leak collections.

Python OSINT tool that checks whether a phone number is linked to accounts on popular online services.

An open source tool for searching usernames across many websites to help with online identity research.