Big tech has a new threat to its market dominance: FTC chairwoman Lina Khan. President Joe Biden appointed Khan chair of the Federal Trade Commission on June 15, putting a prominent proponent of breaking up monopolies in charge of the competition regulator. “I look forward to working with my colleagues to protect the public from corporate abuse,” Khan said in a statement. Progressives have heralded the appointment as an opportunity to rein in the increasing power of Silicon Valley, which will be keeping a close eye on her next moves. Here are five things you should know about the legal wunderkind.…This story continues at The Next Web