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New (And Newly - Changed) Fully Qualified Doman Names: A View of Worldwide Changes to DNS

Talkat Black Hat Europe 2015 · 2015-11-10..11-13· [networking, security]
slides:none on file

Farsight builds two real‑time feeds — a newly‑observed FQDN stream (roughly 150–300 new hostnames per second, about one new delegation per second or ~50,000/day) and a DNS changes stream (29 million changes in 24 hours; ~7M new RR names; extrapolated billions of FQDNs/year). Processing sits in RAM as a continuous in‑RAM processing pipeline that filters CDN noise and junk to surface phishing, DGA/fast‑flux activity, CNAME ad‑evasion and other actionable DNS events.

AI-written summary · about

  1. 0:00Start
  2. 2:17Everything Uses The Domain Name System (DNS)
  3. 5:13Given Potentially Overwhelming Levels of DNS Traffic, You Need To Learn What You Can Ignore
  4. 6:59What's The Security Information Exchange?
  5. 12:28Short-Lived Cyber Criminal Domains vs. Comparatively Long-Lived Normal Domains Domains used by cyber criminal are "different:"
  6. 14:34Blocklists and Cyber Criminal Domains
  7. 17:03Newly Observed Hostnames Per Second and DNS Changes Volume Per Second
  8. 21:45Newly Observed Domains (NOD)
  9. 24:57Newly Observed Fully Qualified Domain Names
  10. 30:13DNS Changes Channel
  11. 36:14How Many DNS Changes In 24 Hours?
  12. 36:40New Base Domains Seen In The 24 Hours of Data
  13. 41:37CDNs and Location-Dependent Answers
  14. 42:51Programmatic Name Generation
  15. 45:41Domain Names Of Special Security Relevance
  16. 46:43Black Hat Sound Bytes
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