A hacker who manages to find security flaws in United Airlines' network could get a globetrotting-enabling prize from the airline: One million air miles. The airline has made its move as cybersecurity threats are costing business trillions — with the cost of data breaches likely to hit $2.1 million globally in just four years, four times the figure for this year. United said on its website that the types of threats eligible for its "bug bounty program" include bugs on customer-facing websites, flaws in the United app and attacks that compromise users' private information. How many air miles you could win depends on how severe a bug you find. To garner the million miles, you must uncover a "remote execution code" — a security flaw that lets hackers infiltrate a network remotely.