A network administrator has installed Secure Endpoint in the network. During setup it was noticed an endpoint has been exhibiting unusual behavior, including slow performance and unexpected network…

Isolating the endpoint from the network is the most critical immediate step in incident response to contain a potential malware infection, preventing it from spreading to other systems, exfiltrating data, or communicating with command-and-control servers.

Resetting passwords and enabling MFA are important security hygiene practices but do not directly address or contain an active malware infection running on the endpoint.

Formatting and reinstalling the operating system is a destructive remediation step that should typically occur *after* isolation and thorough investigation, not as the immediate first action.

Disabling non-essential processes might be part of a remediation plan, but it's less comprehensive and effective than network isolation for containing an unknown or active malware threat.