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'NovaCookies' Kit Steals Microsoft 365 Sessions for $320 a Month

ID: 05df7353-e2c2-566f-8d10-e573129f34a2

STIX ID: report--05df7353-e2c2-566f-8d10-e573129f34a2

Feed Name: Dark Reading

Threat Score
78/100

Date Published: 2026-08-26

Date Updated: 2026-08-26

Author: Elizabeth Montalbano

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A commercial AitM phishing service called NovaCookies is being rented to relay and steal authenticated Microsoft 365 sessions—bypassing MFA—for as little as $200–$320, with researchers identifying at least 755 domains and campaigns targeting hundreds of organizations; the report details delivery and evasion tactics and urges defenders to adopt phishing-resistant authentication (FIDO), managed devices/browsers, session revocation, and token refreshes.

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