OWASP Foundation, the Open Source Foundation for Application Security on the main website for The OWASP Foundation. OWASP is a nonprofit foundation that works to improve the security of software.

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HackerOne combines AI with the ingenuity of the largest community of security researchers to find and fix security, privacy, and AI vulnerabilities across the SDLC. HackerOne offers bug bounty, vulnerability disclosure, pentesting, AI red teaming, and code security.

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acunetix is an end-to-end web security scanner that offers a 360 view of an organization’s security. allowing you to take control of the security of all you web applications, web services, and apis to ensure long-term protection. acunetix’s scanning engine is globally known and trusted for its unbeatable speed and precision.

Bright Security is the next generation AI-powered DAST. Discover OWASP Top 10 and zero days with no false positives.

TryHackMe is a free online platform to learn cyber security through hands-on labs and exercises, accessible entirely in your browser—perfect for all skill levels.

Home of Kali Linux, an Advanced Penetration Testing Linux distribution used for Penetration Testing, Ethical Hacking and network security assessments.

Imperva provides complete cyber security by protecting what really matters most—your data and applications—whether on-premises or in the cloud.

A collection of write-ups from the best hackers in the world on topics ranging from bug bounties and CTFs to vulnhub machines, hardware challenges and real life encounters. Subscribe to our weekly newsletter for the coolest infosec updates: https://weekly.infosecwriteups.com/.