If you are a Lenovo buyer – beware. They're preinstalling adware to inject ads onto your websites and also monitor secure connections. Lenovo says they've removed it for now, but still it could come back. We've seen Superfish popping up on a number of infected systems recently. The SSL monitoring is especially troubling.

Lenovo Installs Adware on New Computers That Could Steal Private Data
Oh no, Lenovo. Users are reporting on the company's forums that its computers are coming installed with adware straight out of the box–that can monitor secure connections.