She's a reverse engineer based in Hong Kong who blogs about embarrassing tech fails in consumer-facing UIs, and she's funny. She's not tweeting out zero-days or how-tos, more screenshots of things that break in absurd or embarrassing ways. She was one of the first people to notice Twitter had changed its policy wrt Substack:
https://mashable.com/article/twitter-substack-blocked-embeds...I followed her on Twitter and had noticed that she seemed to falling out of my feed over the last 3-4 days. Musk stans already didn't like her as she blocks freely.