Earlier quoted context omitted.
In the book Deep Work by Cal Newport, he uses Mayer's firing of remote employees as an example of a toxic work culture that values signalling over production. Here's the excerpt: > In 2013, for example, Yahoo's new CEO Marissa Mayer banned employees from working at home. She made this decision after checking the server logs for the virtual private network that Yahoo employees use to remotely log in to company servers…
VPNs are used for a lot more than checking email. They are used to access source control, build/CI systems, QA servers, etc.
People who routinely worked outside of the office, or just wanted to be able to read their e-mail at home without the VPN client randomly panicing their system, had devised various workarounds to get things done.
The corporate VPN is distinct from production, so you could still do actual work without using it too.