In late 2023, a Reddit user known as "evilscientist311" conducted a comprehensive analysis of Cleo's activity patterns and interactions with other Stack Exchange accounts.
However, I and others were on the scent at least as far back as April, 2023. See for example: https://x.com/TheDavidSJ/status/1650957407902658571
> Wild to see a story I played a major part in on the front page… The first post outlining the theory and evidence was made by me a few years ago
https://www.reddit.com/r/todayilearned/comments/1wyzrji/comm...
user3939382•1h ago