President Biden wants his Peloton in the White House. For those who have missed the hype, it’s an Internet-connected stationary bicycle. It has a screen, a camera, and a microphone. You can take live classes online, work out with your friends, or join the exercise social network. And all of that is a security risk, especially if you are the president of the United States.Any computer brings with it the risk of hacking. This is true of our computers and phones, and it’s also true about all of the Internet-of-Things devices that are increasingly part of our lives. These large and small appliances, cars, medical devices, toys and — yes — exercise machines are all computers at their core, and they’re all just as vulnerable. Presidents face special risks when it comes to the IoT, but Biden has the NSA to help him handle them.