Users are being warned about a phishing scam involving emails that appear to notify them of a new login to their account from an unknown location. These emails often bypass Gmail's spam filters and prompt users to change their password or review apps. Following these prompts leads to a third-party app authorization page, granting scammers access to post and repost on the user's behalf. This can result in unauthorized posts appearing on the user's account. Users are advised to be cautious and verify the authenticity of such emails.