Many corporate/enterprise environments, in particular those involved in regulated activities (e.g. finance) require visibility of all work-related communication

Many corporate/enterprise environments, in particular those involved in regulated activities (e.g. finance) require visibility of all work-related communications, to ensure employees aren't committing any crimes. This isn't limited to, but includes monitoring of all activities when on work properties. Video cameras, desktop monitoring, HTTPS interception, IM logging and phone recording, and more. EDIT: as other comments have pointed out, this essentially boils down to "do not expect any privacy at work" (you have no privacy on employer owned devices) and "do not do any work on devices you expect privacy on" (your employer will install their middleware on your devices, or you may be violating laws)