The link for this post uses a read-only front-end for Twitter, which can be easier to read for viewing a full Twitter thread. The Tweet that kicked off the thread is:
On Saturday, I sat in a crowded ballroom at Caesar's Forum in Vegas and watched @sickcodes jailbreak a John Deere tractor's control unit live, before an audience of cheering @Defcon 30 attendees (and, possibly, a few undercover Deere execs, who often attend Sickcodes's talks). 1/