Not sure what to make of this, been making some tweaks on my WordPress site and checking pagespeed as well as other tools for progress and one session suddenly csa.crazygames.com/event pops up?

A burst of panic had me hunting for mailware or something in a plugin that's gone rogue... But nothing.

Subsequent tests it's gone, installed wordfence for a scan, nothing. I tried another page on pagespeed and Microsoft Clarity appeared, subsequently it's disappeared too, haven't had clarity in over a year and that was run in edge cloudflare tag management.

I'm hoping this is some unexplained ghost glitch from Google on that test session?? Anyone able to put my mind at ease or advise what I'm looking at? Never seen anything like it before.

Apologies for the average screenshot.

Update: after 12 hours of fluffing about I am no further ahead, completely unable to repeat the domain instance, unable to find any evidence of code or script in anything thus far. Still searching (db now) but have a feeling I maybe hunting a phantom occurrence. Pagespeed has been timing out today regularly, all instances with internal timeout errors at Google end. Where as any other tool, dev lighthouse included, runs clean with nothing weird. Everything site wise remains flawless and fast('ish by my standards). No evidence of admin manipulation, user or plugin wobbles... It's going to be a troubled sleep night while I second guess myself. Edit: the only other common thread to the instances observed is they were all using my phone doing pagespeed test, desktop is zilch... I doubt very much this has anything to do with anything at all but I'm just going to start yelling at the passing clouds now...