Today I was with a group of students making a presentation to Siemens. They had emailed the PowerPoint two days ago, but they made a few last minute editorial changes and they wanted to upload a new version. They then take out a thumb drive and stick it into a Siemens laptop to run the presentation. My jaw dropped. Wasn't Siemens implicated in the proliferation of Stuxnet? You'd think that there would now be a corporate-wide policy against any unknown USB drive ever contacting one of their computers.