The TXT Record

Tracking the DNS Stars: The DNS Observatory

Monday, June 10, 2019 By Pawel Foremski

DNS Observatory is a new Farsight Security research project that provides a telescope for the global DNS traffic.

Using DNSDB With openssl s_client To Scan A List of Hosts For Expired SSL/TLS Certificates

Wednesday, May 29, 2019 By Joe St Sauver

A typical company may have dozens or hundreds of hosts with SSL/TLS certificates. Joe shows how to use DNSDB to find expired certs for hosts under a given domain.

Automating Detection of "Random-Looking" Algorithmic Domain Names

Friday, May 17, 2019 By Joe St Sauver

In Part 1 of a 2 Part Series, Joe St Sauver discusses finding atypical domains in Farsight SIE Channel 204 traffic

Analyzing DNSDB Volume-Over-Time Time Series Data With R and ggplot2 Graphics (Part Three of a Three-Part Series)

Thursday, April 18, 2019 By Joe St Sauver

Volume-Over-Time Data From DNSDB Export MTBL Files (Part Two of Three-Part Series)

Monday, April 1, 2019 By Joe St Sauver

Looking at the volume of DNS queries over time in passive DNS can sometimes uncover unusual DNS conditions