Has my Gmail account been hacked?

Episode 1362 (1:06:39)

Charles from Vienna, VA
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Every time Charles tries to open Gmail on his Google Nexus, it wants him to sign in. He's suspicious that someone may have hacked his account. Leo says that there's a lot of reasons to be advised of that, but it's always wise to run Google's Security Checkup just to be safe. It'll tell him what devices are connected to his account and also input a second factor authentication warning.