We have a customer that runs an extremely strict security program, which disallows any type of outside connection to their servers.
In order to even correspond with them via email you must undergo background checks and be validated. Then you sign an NDA and another "secrecy level" contract.

Today they had a problem, I was the one assigned to fix it. I asked for a screenshot.
We already use an encrypted mail service, which runs via a special VPN that has enough layers of protection to slow down a photon to the speed of a snail.
The customer's sysadmin encrypted the screenshot and sent it to me.

I open the screenshot and....
He runs Windows 10, uses Google Chrome and has Facebook's WhatsApp desktop app flashing orange in the tray.

😐😣😫😖