United Airlines has rolled out a series of updates to its Web site that the company claims will help beef up the security of customer accounts. But at first glance, the core changes -- moving from a 4-digit PINs to password and requiring customers to pick five different security questions and answers -- may seem like a security playbook copied from Yahoo.com, circa 2009. Here's a closer look at what's changed in how United authenticates customers, and hopefully a bit of insight into what the nation's fourth-largest airline is trying to accomplish with its new system.
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