Cybercriminals are reportedly taking advantage of a loophole involving an internal Microsoft email account to send spam and phishing links that appear far more legitimate to unsuspecting users.
According to reports, scammers have been abusing a Microsoft-managed email address normally used for genuine account notifications and alerts. Because the messages originate from an official Microsoft system, they are more likely to bypass spam filters and gain users’ trust.
Researchers stated that the exploit has reportedly been active for several months, allowing attackers to distribute phishing emails disguised as authentic Microsoft communications. The scam messages often contain malicious links designed to steal credentials, redirect users to fraudulent websites, or spread malware.
The report highlighted that attackers are increasingly exploiting trusted infrastructure and legitimate platforms to make phishing campaigns more convincing. By using official-looking domains and verified systems, scammers can significantly improve the success rate of social engineering attacks.
Cybersecurity experts warned that these emails may appear almost identical to real Microsoft account notifications, making them difficult for both users and automated email security systems to identify as malicious.
The loophole reportedly involves Microsoft’s internal notification mechanisms, which attackers found a way to manipulate for sending unauthorized content. Security researchers noted that the abuse demonstrates how even trusted enterprise platforms can become targets for exploitation when misconfigurations or overlooked vulnerabilities exist.
The incident also reflects a broader rise in sophisticated phishing operations, where attackers increasingly rely on legitimate infrastructure instead of fake domains to avoid detection. Experts say modern phishing campaigns are becoming harder to distinguish from genuine communications, particularly as cybercriminals adopt AI-powered tools and automation techniques.
Microsoft has reportedly acknowledged the issue and is investigating the abuse. However, the company had not publicly disclosed extensive technical details regarding the loophole at the time of reporting.
Security professionals are advising users to remain cautious even when emails appear to come from trusted platforms. Experts recommend avoiding direct clicks on links received through email notifications and instead manually accessing accounts through official websites or applications whenever possible.
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