sans institute is the most trusted resource for cybersecurity training, certifications and research. offering more than 60 courses across all practice areas, sans trains over 40,000 cybersecurity professionals annually.

enroll in the best cybersecurity courses online by ec-council. boost your career with one of the best cybersecurity learning courses and training. get certified now!

isaca is a global association that provides it professionals with knowledge, credentials, training and community in audit, governance, risk, privacy and cybersecurity.

broadcom inc. is a global technology leader that designs, develops and supplies a broad range of semiconductor, enterprise software and security solutions.

giac certifications develops and administers premier, professional information security certifications. more than 30 certifications align with sans training and ensure mastery in critical, specialized infosec domains. giac certifications provide the highest and most rigorous assurance of cyber security knowledge and skill available to industry, government, and military clients across the world.

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/.

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.

home of kali linux, an advanced penetration testing linux distribution used for penetration testing, ethical hacking and network security assessments.

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tryhackme is a free online platform for learning cyber security, using hands-on exercises and labs, all through your browser!