Bug bounty programs are a great way for white-hat security researchers--hackers-- to earn extra cash. The best programs incentivize finding security flaws with cold, hard cash. On the other end of the spectrum, some companies only offer swag in return for finding flaws. A new set of bounties from United Airlines falls squarely in the middle. The company is offering airline miles in return for hunting security flaws. These miles aren't a measly upgrade from economy; you could earn some real travel time for uncovering a serious system flaw.