Below are the list of 20 largest data breaches in history. Today, Marriott, which is actually Sheraton, Aloft, Westin and many others proudly enters our list at number three.
We had intended to research a list of the top 10 data breaches but found that the top 20 was much more thorough and covered nearly all of notable hacks.
| # | Company / Organization | Number of Stolen Records | Date of Breach | Notes & Links |
| 1 | Yahoo | 3 Billion | Aug-13 | Almost sunk the company |
| 2 | India Elections | 1 Billion | Jan-18 | Aadhaar |
| 3 | Marriott Hotels | 500 Million | Nov-18 | Westin, Sheraton, Aloft |
| 4 | Adult Friend Finder | 412 Million | Nov-16 | Like Ashley Madison |
| 5 | Equifax | 146 Million | Jul-17 | Still not finished |
| 6 | eBay | 145 Million | May-14 | Sensitive but not financial Info |
| 7 | Heartland Payment | 134 Million | May-08 | Payroll customers |
| 8 | Target | 110 Million | Dec-13 | Hacked via HVAC Contractor |
| 9 | TJX Companies | 94 Million | Dec-06 | TJ Max, Mashalls, Winners |
| 10 | JP Morgan Chase | 83 Million | Jul-14 | 76M people & 7M bus |
| 11 | Anthem | 79 Million | Feb-15 | Health Insurance Company |
| 12 | Sony PlayStation | 77 Million | Apr-11 | $15M Settlement |
| 13 | Uber | 57 Million | Nov-17 | $148M fine + $100K to Hacker |
| 14 | Home Depot | 56 Million | Sep-14 | Zero Day Malware |
| 15 | RSA Security | 40 Million | Mar-17 | Tricked employee |
| 16 | Adobe | 38 Million | Oct-13 | Fined $1M |
| 17 | Ashley Madison | 32 Million | Jul-15 | AVID Group |
| 18 | US Office of Personal Mgt | 22 Million | 2012 – 2014 | PlugX |
| 19 | Timehop | 21 Million | Jul-18 | Social Media Hooks |
| 20 | Hong Kong Electoral Office | 3.7 Million | Mar-17 | Two stolen laptops |
Click to enlarge:
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- The 20 Largest Data Breaches in History
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