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Administrative accounts are only used for necessary purposes.

Multi-factor authentication (MFA) and lockout policies are used where practicable, especially for administrative accounts.

IT usage policies are reinforced by regular training to ensure all users know not to open unsolicited links or attachments.

Obsolete platforms are segregated from the rest of the network.

Tamper protection settings in security products are enabled where available.Security updates are applied at the earliest opportunity.Secure configurations are applied to all devices.Where infected systems cannot be quarantined with confidence, then an affected organisation should disconnect from national networks to limit propagation.Īdditionally, to prevent and detect an infection, NHS Digital advises that:.Any user account credentials that may have been compromised should be reset on a clean device.Infected systems are disconnected from the network and powered down as soon as practicable.User account permissions for modifying data are regularly reviewed and restricted to the minimum necessary.Backups and incident recovery plans are tested to ensure that data can be restored when needed.At least one backup is kept offline at any time (separated from live systems).

Critical data is frequently saved in multiple backup locations.

The only guaranteed way to recover from a ransomware infection is to restore all affected files from their most recent backup. To limit the impact of a ransomware infection, NHS Digital advises that:

If a device on your network becomes infected with ransomware it will begin encrypting files, which may also include remote files on network locations.