Comment by vel0city

Yeah, that was also another big red flag for me.

I do have paid services on other Google accounts and have dealt with their support before, but the account they were trying to break into was an ancient one I made as a teenager and don't use for much of anything anymore. If Google Support were to call me about anything (unfathomably unlikely, and never about a security issue like this), it wouldn't be from a free account that has never given Google a dime.

I have received calls from Google associates before. Almost always some account manager looking to find yet another product to sell me. Never proactively to any kind of account issue.