Help-desk social engineering, not zero-days
Scattered Spider's hallmark is phone-based social engineering: they call your help desk impersonating employees to reset MFA and passwords. The exploit is your process, not your software.
How they move
Once in, they pivot fast — abusing identity, cloud, and remote-access tooling to reach data and deploy ransomware, often within a day.
Defending against them
Harden help-desk identity verification (callback, manager approval for MFA resets), monitor for impossible-travel and new-device sign-ins, and limit standing privilege. The human process is the control that matters most here.