[varjag]

Google does this for some time at least.

I received an imminent advanced security threat notification back in January 2019. Urging me to get one of those 2fa dongles (which I did). And just as well, because the next month my account was locked due to an attempted unathorized access.

(whoever works on this at Google, thank you)

[Shank]

The Google warning page can be viewed by anyone, but they do specifically tell targeted individuals through other channels (a big red warning message at the top of Gmail, for example): https://myaccount.google.com/stateattackwarning