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Henry Peltokangas

Director, Engineering

Posts by this author

Anatomy of an Attack

CVE-2025-55182: How ExtraHop Detects React2Shell RCE Exploits

December 9, 2025

React2Shell (CVE-2025-55182) is a CVSS 10.0 RCE flaw in Next.js and React Server Components. See how ExtraHop NDR decrypts the payload and detects post-exploit credential theft.

Anatomy of an AttackSecurity ThreatsNetwork SecurityLateral Movement
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F5 Discloses Nation-State Attack on Cybersecurity Firm, Prompting CISA Emergency Order to Patch BIG-IP

October 20, 2025

Beyond the Patch: Why NDR is Essential for Hunting the Nation-State Actor Inside Compromised F5 Networks

Security AlertsThreat DetectionCritical InfrastructureAnatomy of an Attack
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Breaking Through Encrypted East-West Traffic

September 15, 2025

Stop hidden attacks. Learn how ExtraHop's native decryption capabilities expose Impacket's lateral movement in encrypted east-west traffic.

Threat HuntingNDRCybersecurity
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ExtraHop Joins the Cyber Threat Alliance

April 23, 2025

ExtraHop joins 38 of the most innovative organizations in cybersecurity to share resources, insights, and threat intelligence.

CompanyNDRSecurity Threats
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