WHAT: Yosemite has only 900 reserved campsites available at one time. They cost $20 a night. But scalpers on Craigslist sell them for prime summer dates at $100 and up. They’re also selling permits to climb Half Dome, which are issued for free.
HOW: Hackers have figured out how to game the system. Each day at 7 a.m. when advance reservations go on sale, legitimate customers find themselves blocked out of the phone and Internet lines. And all campsites on sale are grabbed up within minutes.
WHAT’S BEING DONE: Responding to the rising number of complaints, park officials said they are now “becoming more aggressive” in trying to shut down these high-tech scalpers, who also have devised automated programs to instantly buy canceled reservations.