Avast Business Security Antivirus provides active, centrally-managed anti-malware protection to Lehigh-owned faculty and staff PCs and Macs. On PCs, it is used in combination with a centrally-managed enterprise version of Malwarebytes that is automatically installed as part of the Windows Update process. All other anti-malware software should be removed (or deactivated, in the case of built-in Windows software that cannot be uninstalled, such as Windows Defender).