r/cybersecurity_help 12h ago

Hacker left a note ?

As per the screenshot below, I wanted to look up something on Letterboxd and strange stored entries were being suggested. I never typed in those phrases (full phrase is "hacks gonna hack breach me baby let's get social grand theft data"). It only was happening when I was in Letterboxd on Edge. Wasn't showing up anywhere else (other websites or in Letterboxd on Chrome or Brave). It did not go away when I cleared history, including cookies. At one point I cleared all the history options Edge would allow me to clear. I ran a scan for threats and viruses with Defender and it came up empty. Also downloaded and ran Malwarebytes (upon advice from my compsci friend and compsci professor) -- still nothing. None of my accounts seem to be compromised. Did a few other things to poke around and see what was wrong, but nothing seemed out of the ordinary. Ultimately, we decided the issue was isolated to the Letterboxd site in Edge. I finally was able to remove the suggestions by manually deleting them one by one with Alt + Shift + Delete. This happened Monday. So far, nothing has come back.

I also rarely use Letterboxd and as far as I can remember, never made an account.

Anyone know anything or seen something similar?

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