Endpoint hygiene is the set of security practices that keep user devices patched, managed, and controlled. It includes timely updates, approved software, disk and file permission controls, device encryption, account hardening, and centralized management so the endpoint stays in a known-good state.
It matters because many attacks succeed on the device, not the cloud service. A well-managed endpoint is less likely to expose local files, cached sessions, or spoofable app state that can mislead users. Defenders use endpoint hygiene to reduce phishing damage, block malware, limit privilege abuse, and close weaknesses before they become entry points. In collaboration tools, strong endpoint hygiene helps ensure the client trusts only the right data and local artifacts do not override server-side trust.