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Security scanning service for checking files, URLs, domains, and hashes across many detection engines.

Secure messaging and collaboration platform with encrypted chats, calls, and file sharing.

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

Guide to improving Bitcoin privacy through wallets, transaction habits, and network practices.

Columbus Project is an advanced subdomain discovery service with fast, powerful and easy to use API.

Russian-language guide for reducing online exposure and understanding counter-OSINT practices.

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.

Guide to free and open source privacy tools, safer apps, and alternatives to data-heavy services.

Google notebook environment for running Python code, experiments, data analysis, and research workflows.

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

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

Python package template for building command-line OSINT tools with a reusable project structure.

Open source team chat platform for messaging, collaboration, and self-hosted communication.

Cloud messaging app for chats, channels, groups, calls, bots, and file sharing.

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

Database of fake and fraudulent websites used to research online scams, phishing pages, and suspicious domains.

Abuseipdb helps search threat intelligence, IP reputation, domains, and security investigation data.

VPN service from AdGuard for encrypted browsing and privacy-focused network access.

Tool for creating or viewing YouTube playlists without exposing a normal account workflow.

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

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

Att&ck is a developer resource for coding, documentation, communities, security research, or software tools.

Awesome Android Reverse Engineering is a GitHub repository or organization with source code, releases, documentation, or project resources.