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How to verify a data breach
Every data breach is different. Here are some of the tools and techniques TechCrunch uses to check if a data breach is real.
The first signs of a breach at 23andMe began when a hacker posted on a known cybercrime forum a sample of one million account records of Ashkenazi Jews and 100,000 users of Chinese descent who use 23andMe. We also found that plenty of people on social media had historical tweets and posts sharing links to their 23andMe profile pages, each featuring the user’s unique hash identifier. That means companies, organizations and governments will store their files, emails, and other workplace documents in vast servers of online storage often run by a handful of the big tech giants, like Amazon, Google, Microsoft, and Oracle.
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