: If you did not request this file, it is safest to delete the message and block the sender.
: Although .txt files are generally safe plain-text documents, attackers often use "double extensions" (e.g., hq_yahoo.txt.exe ) to hide malicious executable code.
: To protect your account from past or future breaches, ensure you have enabled two-step verification in your Yahoo Account Settings . Yahoo Security Notices
: The file may contain instructions or links designed to trick you into providing your Yahoo login credentials on a fake site.
: Some users report receiving .txt files in emails that claim the sender has personal information or "proof" of activity to extort money (often via Bitcoin). Safety Recommendations