CIS Benchmarks

Best practices and configuration resources for secure IT systems

GitHub Security Advisories

Open database and resource for tracking software vulnerabilities

NIST Computer Security Resource Center | CSRC

CSRC provides access to NIST"s cybersecurity- and information security-related projects, publications, news and events.

OWASP Foundation Resources

Essential web security guidelines and vulnerability documentation

SANS Institute Security Resources

Extensive library of whitepapers, research, and security resources

The International PGP Home Page

Provides a comprehensive, open-source repository for PGP tutorials, OpenPGP standards, and troubleshooting. Key sections cover fundamental topics such as public/private key pairs, digital signatures, and the decentralized web of trust.