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Yahoo Still Ranks As The Largest Data Breach In History

This week in cybersecurity from the editors at Cybercrime Magazine

Read the 2024 Cybersecurity Almanac

Sausalito, Calif. – Jul. 3, 2024

Looking for the biggest hacks ever? Look no further than the recently released 2024 Cybersecurity Almanac.

In what is considered the largest data breach in history, all 3 billion Yahoo user accounts were compromised by a 2013 breach that went undetected for three years. The attackers, believed to be state-sponsored hackers from Russia, stole names, email addresses, phone numbers, birthdates, and encrypted passwords from Yahoo’s user database. A separate 2014 intrusion also allowed hackers to gain the account keys needed to access the private information of over 500 million accounts.

The Almanac has a section devoted to the biggest hacks ever including the 2010 Stuxnet worm, the 2013 Cryptolocker malware, the 2014 cyberattack on Sony Pictures, the May 2017 Wannacry and NotPetya ransomware attacks, the 2017 Equifax data breach, the 2020 Solarwinds attack, and others.

This year’s Almanac also features recent major hacks, and historic computer viruses.

Read the 2024 Cybersecurity Almanac



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