Cybersecurity
Security credentials from entry to expert — ISC2 Certified in Cybersecurity (free exam), CompTIA Security+, CEH, CISSP — and the free training that feeds them.
ISC2
An entry-level cybersecurity certification with FREE official training and a FREE exam through ISC2's One Million Certified in Cybersecurity pledge. The best free foot in the door.
✓ Free training + free exam (ISC2 "One Million Certified" program)
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TryHackMe / Hack The Box
Gamified, hands-on cybersecurity labs with generous free tiers. Not a credential by themselves, but the practical skills that make the certs (and interviews) pass.
✓ Free tiers; respected hands-on skill-building (not a formal cert)
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CompTIA
The most-requested entry security certification; meets DoD 8570 baseline. Study free via Professor Messer; the exam is the paid part.
✓ The baseline security cert for DoD 8570 and most SOC roles
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ISC2
The most-recognized advanced cybersecurity certification — for experienced security professionals and managers. Requires 5 years' experience + a demanding exam; high salary signal.
✓ The flagship senior security certification
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ISACA
ISACA's certifications for security audit (CISA), security management (CISM) and risk (CRISC) — the recognized credentials for GRC and security-leadership roles.
✓ The standard audit/governance/risk security certs
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EC-Council
The best-known penetration-testing / ethical-hacking certification, frequently required in job postings and listed for DoD 8570. Paid training + exam.
✓ Widely-requested offensive-security cert (DoD 8570 listed)
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GIAC / SANS Institute
The certifications paired with SANS training — among the most respected (and expensive) in security, covering forensics, incident response, pen-testing and more.
✓ Premium, deeply-respected hands-on security certs
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