Hi Codeforces Community,

This is my first post and I want to share something I have observed lately.

On a newly loaded page, I see pop ups ads which prevents from interacting with site's content until a sacrificial click on page takes me to pop ads, much like in mirrors of torrent sites. I switched to https page on experimenting and I found that those types of ads doesn't happen there.

I re-installed firefox on my linux machine, and this only happens on codeforces, so I dont suspect any malware on my PC (nor any unknown process).

Is this intentional from Codeforces? Screenshot attached.