Yahoo never once sent me an email about someone signing in from an unfamiliar device. But Google did. Thanks to yahoo my bank accounts was hacked these hackers applied for credit cards. Yahoo you need to be sued for this data breach!! I’m frustrated and there’s no answers from Yahoo. But my banks are pointing the finger at you. I see yahoo ignores these comments. YAHOO FIX THIS PROBLEM FOR OTHERS BECAUSE I’m in the works of transferring my email over thanks to you!!