Since 30 minutes, my GMail inbox is getting flooded with spam. I didn't do anything, I just disabled one extension in Firefox, and after the restart of the browser, I noticed that I'm getting loads of spam in my GMail account.

In 20 minutes, I already reached the 500+ mails mark, this is going quite fast, and I don't know now how to stop this, I guess soon my inbox will be completely full.

ALL the mails are about me registering at some site, and that I now need to complete my registration.

I'm completely lost, I don't wanna lose my account and create a new one, as ALL my stuff is registered with this mail account now, creating a new one would mean changing addresses at every single site I'm registered, plus devices and stuff.

Anyone had this problem?

(Just by typing this message, inbox reached now 700!!!)