PhishingPublished 26 Jun 2026

Mirage2FA phishing kit uses HTML smuggling to steal Microsoft 365 credentials

Source Reddit Cybersecurity

Discussion

Mirage2FA is a phishing kit that uses HTML smuggling and obfuscated JavaScript to deliver fake Microsoft 365 login pages. It targets users with business-themed lures and mimics the Microsoft 365 sign-in process, including MFA prompts. The goal is to steal Microsoft 365 credentials and potentially take over accounts. The phishing campaign uses short-lived domains and sophisticated code obfuscation to evade detection.

r/cybersecurity (opens in a new tab)u/sunychoudhary0 points0 comments

https://www.helpnetsecurity.com/2026/06/26/mirage2fa-phishing-kit-microsoft-365-html-smuggling/

Links cited in the discussion

https://www.helpnetsecurity.com/2026/06/26/mirage2fa-phishing-kit-microsoft-365-html-smuggling/

Impact

Successful exploitation can lead to Microsoft 365 account takeover, allowing attackers to access sensitive email communications, files, Teams messages, SharePoint content, and other connected SaaS resources. This compromises organizational security and data confidentiality. The phishing kit's use of MFA prompts increases the likelihood of bypassing multi-factor authentication protections.

Defensive guidance

Users who have interacted with the phishing page or submitted credentials should immediately reset their passwords, revoke active sessions and refresh tokens, review MFA methods, inspect mailbox rules, and check OAuth grants for unauthorized access. Organizations should educate users about phishing risks, especially those involving MFA prompts, and monitor for indicators of compromise such as the domains cheacker.store and user.cheacker.store. Employing email filtering and anti-phishing solutions can help reduce exposure.

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Discussion

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AI analysisMachine-generated, updated 26 Jun 2026, 12:38 UTC

Technical details

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