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Available Security Topics:
Network Security
Protocols, firewalls, network attacks and defenses
Web Security
OWASP Top 10, XSS, SQLi, CSRF, and web app defenses
Cryptography
Encryption, hashing, PKI, and cryptographic protocols
Malware Analysis
Viruses, trojans, ransomware, and analysis techniques
Digital Forensics
Evidence collection, memory analysis, and forensic tools
Linux Security
Hardening, permissions, SELinux, and secure configuration