ARToken phishing service tied to EvilTokens expands Microsoft 365 token theft and business email compromise attacks

Researchers say a phishing service called ARToken is tied to the EvilTokens platform and is being used to break into Microsoft 365 accounts and steal long-lived access tokens. Cisco Talos found a React-based ARToken management panel with more than 80 API endpoints, including the same Microsoft OAuth 2.0 device-code phishing and Primary Refresh Token (PRT) workflows previously linked to EvilTokens. The toolkit can access Outlook, SharePoint, and OneDrive, create inbox rules, send mail from victim accounts, and deploy phishing infrastructure through Cloudflare Workers.
Why it matters: This matters because the attacks use Microsoft's legitimate device login flow, which can trick users into handing over access even when multi-factor authentication is enabled. Organizations using Microsoft 365 should urgently review device-code sign-in activity, tighten controls around OAuth and token use, monitor for suspicious inbox rules and mail forwarding, and warn users about unexpected prompts to enter device codes.

Sources

AI-Powered Phishing Platform EvilTokens Disrupted by Microsoft
Eduard Kovacs 2026.09.23 95% relevant
This is a direct update on the EvilTokens operation: Microsoft says it disrupted the platform, seized 50 sites, disabled 150 domains, linked it to more than 12,000 compromised email accounts at over 10,000 organizations, and named two UK-arrested suspects. It adds concrete scale, takedown actions, and Microsoft’s description of EvilTokens’ AI-assisted device-code phishing and post-compromise targeting workflow.
Microsoft Takes Down EvilTokens Device-Code Phishing Service Tied to 12,000 Inbox Compromises
info@thehackernews.com (The Hacker News) 2026.09.22 95% relevant
This appears to be a direct update on the EvilTokens operation, adding that Microsoft took down the service and tying it to about 12,000 compromised inboxes through device-code phishing against Microsoft 365 accounts.
Two arrested in UK after Microsoft takedown of ‘Eviltokens’ AI-chatbot for cybercriminals
2026.09.22 97% relevant
This is a direct update on the same EvilTokens operation, adding Microsoft's court-authorized takedown of 50 sites and 150 domains, cooperation with OpenAI and Health-ISAC, and the arrest in the UK of two alleged operators. It also adds scale and impact details, including links to more than 12,000 compromised inboxes across over 10,000 organizations.
EvilTokens PhaaS disrupted after compromising 12,000 Microsoft accounts
Bill Toulas 2026.09.22 95% relevant
This is the same underlying EvilTokens phishing-service story and adds major new developments: Microsoft-led disruption of the infrastructure, U.K. arrests of two suspected administrators, and updated scope showing more than 12,000 compromised Microsoft accounts at over 10,000 organizations.
UK cops arrest 2 EvilTokens suspects, Microsoft seizes 50 phishing kit websites
2026.09.22 94% relevant
This is a direct update on the EvilTokens phishing ecosystem: it adds that Microsoft and partners seized 50 EvilTokens sites, disabled 150 supporting domains, and UK police arrested two alleged administrators after the service was used to compromise 12,000 inboxes across 10,000 organizations.
ARToken PhaaS exposes EvilTokens' Microsoft 365 phishing toolkit
Lawrence Abrams 2026.07.03 100% relevant
This article establishes a distinct tracked story by adding new technical reporting on ARToken as an apparent EvilTokens affiliate platform, with concrete details about its Microsoft 365 token theft, persistence, and BEC automation capabilities.
← Back to all stories