Has your personal info been exposed to hackers?

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At least 500 million Yahoo users had their information stolen in 2014, the company said on Thursday — a year when half of American adults had their personal information exposed to hackers. Several more big names have been attacked since.

Answer the questions below to learn which parts of your identity may have been stolen in some of the major hacking attacks in the last three years and what you can do about it. Not all attacks are included here, and many attacks go undetected, so think of your results as a minimum level of exposure. Take the quiz at New York Times.