Acoustic: Solving a CyberDefenders PCAP SIP/RTP Challenge with R, Zeek, tshark (& friends)

Hot on the heels of the previous CyberDefenders Challenge Solution comes this noisy installment which solves their Acoustic challenge. You can find the source Rmd on GitHub, but I’m also testing the limits of WP’s markdown rendering and putting it in-stream as well. No longer book expository this time since much of the setup/explanatory bits… Continue reading

Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark

It was a rainy weekend in southern Maine and I really didn’t feel like doing chores, so I was skimming through RSS feeds and noticed a link to a PacketMaze challenge in the latest This Week In 4n6. Since it’s also been a while since I’ve done any serious content delivery (on the personal side,… Continue reading

Help Your Mac Stand Between The Darkness And The Light with GreyWatch

Greynoise helps security teams focus on potential threats by reducing the noise from logs, alerts, and SIEMs. They constantly watch for badly behaving internet hosts, keep track of the benign ones, and use this research to classify IP addresses. Teams can use these classifications to only focus on things that (potentially) matter. They also have… Continue reading

A Look at PAN-OS Versions with a Bit of R

The incredibly talented folks over at Bishop Fox were quite generous this week, providing a scanner for figuring out PAN-OS GlobalProtect versions. I’ve been using their decoding technique and date-based fingerprint table to keep an eye on patch status (over at $DAYJOB we help customers, organizations, and national cybersecurity centers get ahead of issues as… Continue reading

BIMI Up, Scotty! A look at Brand Indicators for Message Identification (BIMI) Adoption with R and the Alexa Top 1m

It seems that the need for MX, DKIM, SPF, and DMARC records for modern email setups were just not enough acronyms (and setup tasks) for some folks, resulting in the creation of yet-another-acronym — BIMI, or, Brand Indicators for Message Identification. The goal of BIMI is to “provide a mechanism for mail senders to publish… Continue reading

Davos 2020 World Economic Forum 2020 Global Risk Report Cyber Cliffs Notes

Each year the World Economic Forum releases their Global Risk Report around the time of the annual Davos conference. This year’s report is out and below are notes on the “cyber” content to help others speed-read through those sections (in the event you don’t read the whole thing). Their expert panel is far from infallible,… Continue reading