The "Unexpected Sign-in Attempt" Phishing Scam
From: AT&T Yahoo Mail [mailto:firstname.lastname@example.org]
Sent: Monday, December 03, 2018 11:26 AM
Subject: Unexpected sign-in attempt**
You're advise to switch to the new version to avoid disconnection.
Please do not reply to this e-mail. Mail sent to this address cannot be answered
For assistance, log in to your email! website and choose the "Help" link on any page.
Customer Service Email ID # 1009
c 2018!, Inc. All rights reserved
The link in the phishing email message goes to a fake or phishing Yahoo website, which will attempt to trick the potential victims into entering their usernames and passwords on it. If AT&T Yahoo Mail users attempt to sign into phishing website with their usernames and passwords, it will be sent to the cybercriminals behind the email scam, who will use the information to hijack their accounts. The hijacked AT&T Yahoo Mail accounts will then be used by cybercriminals fraudulently.
Remember, if you receive email messages like these, please go directly to your email account instead of clicking on the links in the email messages. If there is anything wrong with your account, it will be shown to you after signing into your account. And, if you were tricked by one of these phishing scams, please change your password immediately before your AT&T Yahoo Mail account is hijacked.