Hmm.

If you're on Android:

- plug your phone into your PC

- open chrome://devices on your PC

- open a new tab on your phone

- find the tab you just opened on the PC side and hit 'inspect' (or 'inspect fallback' if there's a version mismatch alert)

- ensure 'preserve log' is checked in the network tab

- if you want you can paste the URL on the PC side

s/PC/Mac/ as applicable

Now you can go digging: once you've located the first evil request, select it and the Initiator tab should tell you what loaded it.

Nobody else can repro, so the root cause may be interesting.

that's really interesting. I used to have this problem all the time but I just realized that I haven't really seen the problem on my device in at least a year or so.

Same. Firefox on iOS. However, no problem with Edge on iOS.