Home Workers- We don't trust but logs we do

I could not resist taking the following from recent article on "Why Yahoo CEO banned work-at-home folks?"

"According to Business Insider, which cites one anonymous source, Mayer checked the logs of Yahoo's Virtual Private Network -- a system many businesses use to allow secure entry into their digital network -- to find out how often remote employees checked in."
Source: usatoday.com
For those who do not know, VPN is a secure way for remote access to corporate networks. And is the dominant technology in use today in most corporations around the globe. What people did not know was it logs user activity. Now they do. (Latest is that Best Buy has banned at-home workers as well.)