THE Microsoft Defender's new device isolation feature effectively disrupts multi-stage ransomware attacks, as demonstrated in a case where an attack was halted within 128 seconds at QNET. By automatically isolating compromised endpoints, Defender prevents further malicious activity before the attacker can establish persistence or lateral movement. The device isolation process blocks all external network connections while preserving access to security services.
This advanced feature allows security teams to focus on root cause analysis without the pressure of ongoing threats, enhancing incident response efficiency.