SITUATION EXPLAINED: A Chinese open model is now the best in the world at finding vulnerabilities. • GLM-5.3 scores 84.5 on CyberGym, ahead of Mythos 5 at 83.8 and Sol at 83.6 • Every gain came from post-training the same base model as 5.2, with no new pretraining • Since 5.2, its models have found 2,436 vulnerabilities across 269 projects, 1,097 critical or high, in the Linux kernel, WebKit, and FreeBSD. • The oldest dates to 1981, and the average had been sitting there 26.6…