Thursday, March 14th – 6:12pm @ Virtual

Written by  on March 13, 2024

Update: We are having some technical difficulties with the Jitsi server which just started a moment ago. As a backup, please join us in our Discord server until we can figure out what’s up:

Hello Hackers!

We are happy to be joined again by @lozaning! Did you make sure to floss and brush? Because if not, they’ll know:

The talk is on the process and tools used to create the first ESP32 self replicating worm in a commercial product, aka the toothbrush botnet. We’ll cover dumping the original firmware, some light RE, the way that ESP32 over the air firmware updates work, setting up a dedicated wifi network to perform MITM attacks, the challenges of creating self referencing firmware in a resource constrained platform, as well as some in process work to automate finding new devices that use the same chips by scraping the FCC’s website.

As usual these days of Covid, we will be meeting online at

Talk starts at 6:12 PM U.S. Central, but feel free to hop in early and chat.

— TactiFail