Hackers Use Cloudflare Human Check to Hide Microsoft 365 Phishing Pages

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March 12, 2026 at 5:10 PM

Actively Exploited

Overview

Scammers are exploiting security features from Cloudflare to mask fraudulent Microsoft 365 login pages, making it harder for users to identify phishing attempts. This tactic allows attackers to evade detection by antivirus software and security systems, putting sensitive information at risk. Users of Microsoft 365 should be particularly cautious, as these phishing pages can look very convincing and lead to credential theft. The situation emphasizes the need for individuals and organizations to remain vigilant about email security and to double-check URLs before entering personal information. Cybersecurity experts are urging users to enable multi-factor authentication to add an extra layer of protection against such scams.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Microsoft 365 users, Cloudflare security tools
Action Required: Enable multi-factor authentication, verify URLs before entering credentials, educate users about phishing tactics.
Timeline: Newly disclosed

Original Article Summary

Scammers are hijacking popular security tools like Cloudflare to hide fake Microsoft 365 login pages. Learn how this new invisible phishing campaign bypasses antivirus software and how you can stay safe.

Impact

Microsoft 365 users, Cloudflare security tools

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Enable multi-factor authentication, verify URLs before entering credentials, educate users about phishing tactics.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Phishing, Microsoft.

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