Tactical anti-infostealer defenses to reduce credential theft and session abuse
Defensive Guidance
Summary
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Security teams are being told to harden against infostealers with specific technical controls, because stolen credentials and session artifacts can enable unauthorized access and downstream ransomware activity. The guidance emphasizes moving beyond basic hygiene and implementing measures such as FIDO2 MFA, forced re-authentication, and cookie replay detection. It also highlights monitoring for suspicious or impossible travel to catch stolen-session abuse before it spreads.
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Timeline
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17.10.2025 11:30 2 articles · 7mo ago
Security teams urged to deploy anti-infostealer defenses
Initial DisclosureAt ISACA Europe 2025, Tony Gee of 3B Data Security described infostealers as a driver of the current ransomware wave, noted that stealer logs can be bought for as little as $10 on dark web marketplaces, and urged security teams to harden identity and session controls with FIDO2-enabled MFA, forced re-authentication, shorter token lifetimes, cookie replay detection, and suspicious or impossible travel monitoring.
Show sources
- Security Teams Must Deploy Anti-Infostealer Defenses Now — www.infosecurity-magazine.com — 17.10.2025 11:30
- Security Teams Must Deploy Anti-Infostealer Defenses Now — www.infosecurity-magazine.com — 17.10.2025 11:30