Feb 15, 2026 DNS, Part 4 — When DNS Lies: Cache Poisoning, Spoofing, and How to Defend Yourself Part 4 How DNS attacks actually work — Kaminsky, Sea Turtle, MyEtherWallet, DigiNotar — and the layered defenses that hold up: DNSSEC, DoH, CAA, registrar lock. dnsdnssecsecurityinfrastructure