Perforce 2026 State of DevOps Report
OAuth Redirection Abuse Analysis
How Attackers Weaponize Trusted Identity Endpoints
Threat actors are increasingly exploiting OAuth’s error-handling behavior to route phishing victims through login.microsoftonline.com ， accounts.google.com. By crafting URLs that are designed to fail, attackers can silently redirect users to malicious infrastructure.
The “Poison Pill” URL: Attackers use the
prompt=none and an invalid scope to force an immediate redirect without the victim seeing a single Microsoft or Google UI element.Anatomy of a Malicious Authorization Request
GET /common/oauth2/v2.0/authorize
?client_id=<attacker_app_id>
&prompt=none
&scope=INVALID_SCOPE
&response_type=code
&redirect_uri=https://attacker-c2.com/phish
?client_id=<attacker_app_id>
&prompt=none
&scope=INVALID_SCOPE
&response_type=code
&redirect_uri=https://attacker-c2.com/phish
Detection & Mitigation Strategies
- Monitor for Error 65001: Audit Entra ID sign-in logs for
resultType = 65001involving unknown application IDs. - Restrict User Consent: Disable user-led consent for multi-tenant applications or restrict it to “Verified Publishers” only.
- Analyze State Parameters: Inbound emails containing OAuth URLs where the
stateparameter decodes to a victim’s email address are high-confidence indicators of phishing.
MITRE ATT&CK Mapping
| Technique ID | Name | Context |
|---|---|---|
| T1566.002 | Spearphishing Link | Malicious OAuth URLs in emails. |
| T1557 | Adversary-in-the-Middle | Credential theft via EvilProxy. |
| T1574.002 | DLL Side-Loading | Execution via steam_monitor.exe. |
關於 Guardz
Guardz 為管理服務提供商 (MSP) 和 IT 專業人士提供一個人工智能驅動的網絡安全平台，專門設計來保護小型企業免受網絡攻擊。我們的統一檢測與響應平台能夠全面保護用戶、電子郵件、設備、雲端目錄和數據。透過簡化網絡安全管理，我們讓企業能夠專注於發展業務，同時減少安全管理的複雜性。Guardz 結合強大的網絡安全技術和豐富的專業知識，確保安全措施持續受到監控、管理和改進，預防未來的攻擊並降低風險。
關於 Version 2
Version 2 Digital 是立足亞洲的增值代理商及IT開發者。公司在網絡安全、雲端、數據保護、終端設備、基礎設施、系統監控、存儲、網絡管理、商業生產力和通信產品等各個領域代理發展各種 IT 產品。
透過公司龐大的網絡、通路、銷售點、分銷商及合作夥伴，Version 2 提供廣被市場讚賞的產品及服務。Version 2 的銷售網絡包括台灣、香港、澳門、中國大陸、新加坡、馬來西亞等各亞太地區，客戶來自各行各業，包括全球 1000 大跨國企業、上市公司、公用事業、醫療、金融、教育機構、政府部門、無數成功的中小企及來自亞洲各城市的消費市場客戶。