Scammers Exploit Microsoft Email System for Phishing Attacks

Scammers Exploit Microsoft Email System for Phishing Attacks

First seen 21 May 2026, 14:45 UTC Techcrunchwww.bleepingcomputer.comTechbuzz.AiZamin.UzMashable+3 87% similarity 66.0

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Cybercriminals have discovered a method to exploit Microsoft's internal email system, specifically the [email protected] address, to send phishing emails that appear legitimate. This vulnerability allows attackers to send emails that bypass traditional security filters, as they originate from a trusted Microsoft domain. The emails often contain fraudulent financial alerts or links to malicious websites, targeting enterprise customers who rely on Microsoft's notifications. The exact method of exploitation is unclear, but it involves manipulating Microsoft's automated email systems. The Spamhaus Project has confirmed that this issue has been ongoing for several months, and Microsoft has yet to provide a detailed response or fix. Security experts warn that this could lead to significant risks for users who are conditioned to trust Microsoft notifications. The scope of the impact remains uncertain, but it poses a serious threat to organizations using Microsoft services.

Key Points: • Scammers are using a legitimate Microsoft email address to send phishing emails. • The exploit bypasses traditional security filters, making detection difficult. • The Spamhaus Project confirmed the issue has been ongoing for several months.

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Timeline

2026-05-21
Scammers exploit Microsoft email system
Cybercriminals use [email protected] to send phishing emails, bypassing security filters.
TechCrunch
2026-05-21
Spamhaus Project confirms ongoing issue
The non-profit organization reported that the abuse of Microsoft's email system has been occurring for several months.
TechCrunch
2026-05-21
Microsoft has not addressed the issue
Despite inquiries, Microsoft has not provided a detailed response or solution to the email abuse problem.
Mashable

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