When trying to add a new or old Microsoft Account with a custom domain like live.com, hotmail.com, msn.com or your own custom domain or any other third-party domain you may get the message This email ...

Don't miss out on our latest stories. Add PCMag as a preferred source on Google. Microsoft has taken aim at spammers who are abusing its onmicrosoft.com domain—otherwise known as Microsoft Online ...

Attackers exploit misconfigured email routing and weak spoof protections to send internal-looking phishing emails for ...

Threat actors are abusing misconfigured MX records and weak DMARC/SPF policies to make phishing emails look internal, ...

Microsoft has witnessed a surge in the use of this tactic since May 2025, as part of opportunistic campaigns targeting organizations across multiple industries and verticals.

A fake Microsoft email domain is making the rounds again, tricking users into clicking password reset links that look legitimate. The phishing campaign uses the domain "rnicrosoft.com," swapping the ...

Threat actors abuse complex routing and misconfigured protections to spoof domains and send phishing emails that appear to be ...

Hotmail users worldwide have problems sending emails, with messages flagged as spam or not delivered after Microsoft misconfigured the domain's DNS SPF record. The email issues began late last night, ...

Beware this highly sophisticated Microsoft 365 attack. Update, March 15, 2025: This story, originally published March 13, has been updated with further technical detail regarding the Microsoft 365 ...