I gave google my phone number a long time ago when I set up two step authentication. Your account is significantly more secure when you do that. Has never been

I gave google my phone number a long time ago when I set up two step authentication. Your account is significantly more secure when you do that. Has never been abused AFAIK. I think of it as similar to giving identifying information to my credit card company when I'm calling them. (Though citi pissed me off asking me for the full credit card number a few years ago).