that only ever ran MS software due to the organisation being totally MS centric. Windows, MS Office, Outlook, MS Internet Explorer, MS Defender, Windows Server, etc - their accounts were outsourced and that company only ever sent over printed reports. All software within the organisation had to be Microsoft or you couldn't load it on a company system. yet they had one of the highest infection rates I've ever seen in a corporate environment, especially for an organisation of 23 people.