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Your IAM Under Siege: Scattered Spider TTPs & the Zero-Trust Response Plan By CyberDudeBivash • Date: September 20, 2025 (IST)

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  Executive summary “Scattered Spider” (aka UNC3944 / Muddled Libra / Octo Tempest ) is the most consequential identity-centric threat cluster in recent memory. Their hallmark is human-layer intrusion : calling helpdesks, abusing MFA workflows, SIM-swapping numbers, adding new factors, and riding newly granted admin privileges into SSO/IDPs and cloud control planes. Recent joint advisories (FBI/CISA + Five Eyes) and vendor reporting confirm escalating TTPs , including broadened ransomware partnerships, Snowflake-scale data theft, and continued social-engineering of IT support. TechRadar +3 CISA +3 CISA +3 This guide gives you two things: a concise map of Scattered Spider’s latest IAM tradecraft, and a copy-ready zero-trust response plan —identity controls to turn on, detections to deploy today, and a 72-hour hardening sprint your SOC can run immediately. Threat actor snapshot (what’s known & stable) Aliases: Scattered Spider ( CrowdStrike : SCATTERED SPIDER / U...