The key is that your personal private papers may be subject to discovery via your employer, your life, and more.

Especially if you're a C-level exec.

Policies about document and media handling are important if you're up where discovery is an active possibility. Or "have nothing to hide."

The only reason this diary hit the discovery towers was because he wrote and kept it on the company laptop. If he didn't, this would have never come to light.

Carry two phones, carry two laptops.