ZeroDay Cyber Feed
Explore fresh threat intelligence, zero-day vulnerabilities, and cyber news. Stay ahead of the curve with our real-time feed of the latest in cybersecurity.
Help keep ZeroDay free for everyone. Donate any amount (Donante) to support independent cybersecurity education and daily threat intelligence updates.
Professional Course Tracks
Learn offensive security, network exploitation, red team operations, and real-world penetration testing techniques aligned with industry standards and hands-on vulnerability assessment practices.
Most detailed category with step-by-step breakdowns, realistic scenarios, and practical examples.
CVE posts are concise vulnerability summaries for fast awareness and prioritization.
Infrastructure assessment, exposure mapping, and internal attack-chain coverage for practical testing.
Follow CVE summaries for context, then move to Red-Team for deeper techniques and examples.

NETWORK-L2 Chapter — Phase 1. IRR database, IRRDB filtering, prefix-list construction, bogon filtering, max-prefix limits. Harvard-level networking education from zero to expert with Scapy examples and Cisco labs.

NETWORK-L2 Chapter — Phase 1. RPKI infrastructure, ROA records, route origin validation states, invalids filtering. Harvard-level networking education from zero to expert with Scapy examples and Cisco labs.

NETWORK-L2 Chapter — Phase 1. AS_PATH prepending, MED manipulation, local-pref for outbound, communities for inbound. Harvard-level networking education from zero to expert with Scapy examples and Cisco labs.

NETWORK-L2 Chapter — Phase 1. confederation design, sub-AS, AS_PATH behavior, comparison with RR, hybrid designs. Harvard-level networking education from zero to expert with Scapy examples and Cisco labs.