Yahoo!

2 breaches968K affected in allTechyahoo.com

2014 Yahoo breach hit 515,000 UK accounts; ICO fine of GBP 250,000Hacking exposed names, emails, phone numbers, dates of birth, passwords and addresses. Reported to the California AG.Hacking515K affectedTechUSSep 22, 2016 SQL injection on Yahoo Voices leaks about 450,000 plaintext passwordsHacking exposed emails and passwords.Hacking453K affectedTechUSUnverifiedJul 12, 2012

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Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages.

data_types2026-09-25

Yahoo!, 2016-09-22["names","emails","phone","dob","passwords","other","addresses"]

occurred2026-09-25

Yahoo!, 2016-09-222016-08-13

source2026-09-25

Yahoo!, 2016-09-22https://www.maine.gov/ag/sites/maine.gov.ag/files/docs/Data%20breach%20spreadsheet%208-1-2021%20through%2012-5-2018%20REDACTED.xlsx

fine_usd2026-09-25

Yahoo!, 2016-09-22334000

lawsuit2026-09-25

Yahoo!, 2016-09-22GBP 250,000 ICO fine (June 2018); USD 35M SEC penalty on Altaba (2018)

records2026-09-25

Yahoo!, 2016-09-22515000

summary2026-09-25

Yahoo!, 2016-09-22The 2014 Yahoo breach, disclosed publicly in September 2016, affected about 500 million accounts including more than 515,000 UK accounts controlled by Yahoo UK Services. The ICO fined it GBP 250,000 under the Data Protection Act 1998 for se

title2026-09-25

Yahoo!, 2016-09-222014 Yahoo breach hit 515,000 UK accounts; ICO fine of GBP 250,000

source_type2026-09-25

Yahoo!, 2012-07-12press

source_url2026-09-25

Yahoo!, 2012-07-12https://www.bbc.co.uk/news/technology-18811300

attack2026-09-25

Yahoo!, 2012-07-12hacking

records_basis2026-09-25

Yahoo!, 2012-07-12organization

disclosed2026-09-25

Yahoo!, 2012-07-122012-07-12

summary2026-09-25

Yahoo!, 2012-07-12Yahoo confirmed it was investigating a breach that exposed about 450,000 user IDs and plain text passwords taken from servers tied to its Yahoo Voices publishing service.

title2026-09-25

Yahoo!, 2012-07-12SQL injection on Yahoo Voices leaks about 450,000 plaintext passwords

status2026-09-25

Yahoo!, 2016-09-22settled

fine_usd2026-09-25

Yahoo!, 2016-09-2235000000

lawsuit2026-09-25

Yahoo!, 2016-09-22$35M SEC penalty for failure to disclose (2018)

records2026-09-25

Yahoo!, 2016-09-22500000000

summary2026-09-25

Yahoo!, 2016-09-22Yahoo confirmed that information associated with at least 500 million user accounts, including names, emails, phone numbers, birth dates, hashed passwords and some security questions, was stolen in late 2014 by what it believed was a state-

title2026-09-25

Yahoo!, 2016-09-22State-sponsored actor stole data tied to 500 million Yahoo accounts in 2014

sector2026-09-25

Yahoo!, 2016-09-22tech

attack2026-09-25

Yahoo!, 2016-09-22hacking

data_types2026-09-25

Yahoo!, 2016-09-22["names","emails","phone","dob","passwords","other"]

records_basis2026-09-25

Yahoo!, 2016-09-22organization

records2026-09-25

Yahoo!, 2016-09-221000000000

summary2026-09-25

Yahoo!, 2016-09-22Yahoo disclosed that an unauthorized third party stole data associated with more than one billion user accounts in August 2013, including names, emails, phone numbers, birth dates, MD5-hashed passwords and some security questions. The figur

title2026-09-25

Yahoo!, 2016-09-22August 2013 theft of data from more than one billion Yahoo accounts

Added2026-09-25

Yahoo!, 2012-07-12

domain2026-09-25

Yahoo!yahoo.com