The indictment said the computer engineer, identified only by his surname Liao (廖), was involved in using malware to paralyze the system during an update.
They’re translating 涉及 as involvement, which is correct, but it’s, you know…
I don’t think he needed to resort to DOS attack. He was the engineer writing the code, so he simply hid a code comb inside the source code. It’s kind of silly because there aren’t that many engineers working at the company, and the police sort of just asked “who has the ability to do this” and that was it.