says it will mean an end to security updates and patches to fix software bugs. >> you risk identity theft. you're not going to be protected against the newest vulnerabilities. it can make it very easy for somebody to hack in and steal your information. >> reporter: but the donut plant is sticking with old, reliable xp, hoping the "if it ain't broke don't fix it" strategy doesn't come back to bite it. tech consultant bob farkas. >> we have heard of so many businesses being hacked into, so it's very important that the computers are always running the latest updates and security patches and things like that. >> reporter: xp is used to run everything from power plants to doctors' offices. as of last year, 95% of all atms ran on xp, and by today, it's estimated less than 20% will have upgraded. >> pelley: anthony, thanks very much. well, high school seniors upgrading to college are getting a record number of "nos" this year. stanford is stingiest.