Jason is a data scientist (programmer) who joined a computer club after grad school. He explains what happened as follows... Jason picked a screen name another hacker didn't like and got his email hacked by him. To get the hacker back, Jason ended up slowing down his WiFi for 20 minutes a day on three days. The hacker called the FBI about it (without telling them he hacked Jason first), and Jason was arrested and charged with "accessing a protected computer network."
Jessica's petition asks President Obama to intervene on Jason's behalf. For more information, check out http://saveanerd.net.