Breaking the code: Multi-stage ‘code of conduct’ phishing campaign leads to AiTM token compromise

2026-05-05T20:52:21Z5bb7d58af69fc4af6f8f60a5cddda1146a4e67b59b38e5ad6549b48f54d2031b
Agent 365AiTMCAPTCHA‑gated phishingCVE-2026-31431Copy FailKubernetesLinux privilege escalationMicrosoft DefenderQR phishingSentinel UEBATycoon2FAauthenticated emailcloud securitycredential theftdetection and mitigationemail securityexploit in the wildphishing

What happened

Microsoft Security Blog posts summarize multiple active threats and defenses: Defender Research uncovered a large-scale, multi-stage ‘code of conduct’ credential‑theft phishing campaign that uses legitimate email services and fully authenticated messages from attacker-controlled domains to perform AiTM (Adversary‑in‑the‑Middle) token compromise. Microsoft also reports Q1‑2026 email trends (increases in credential phishing, QR‑code phishing, and CAPTCHA‑gated campaigns; disruption of the Tycoon2FA platform) and published mitigation guidance. Separately, a high‑severity Linux vulnerability—CVE-0

Why it matters

A reviewed impact interpretation has not been published for this record.

Evidence and limitations

Source ID
microsoft_security_blog
Record identifier
5bb7d58af69fc4af6f8f60a5cddda1146a4e67b59b38e5ad6549b48f54d2031b
Enrichment time
2026-05-05T20:52:21Z
AI-assisted enrichment
Yes

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