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44 disclosed this week · 26,355 on record

TalkTalk

Disclosed Oct 22, 2015156,959 affectedUnverified

SQL injection attack on TalkTalk steals data of nearly 157,000 customers

TalkTalk said up to four million customers might be affected by an attack on its website; the ICO later found the attacker took personal data of nearly 157,000 customers, including bank details in about 16,000 cases, and fined it a record 400,000 GBP.

What is known

People affected156,959 (as reported by the organization)
DisclosedOct 22, 2015
DiscoveredOct 2015
AttackHacking
Data exposedNamesAddressesDates of birthPhone numbersEmailsFinancial
SectorTelecom · GB
StatusUnverified: not yet confirmed by an official notice, a filing or the organization
Lawsuit or fine400,000 GBP ICO fine (2016) (about $490K)

Sources

Notices filed

Other breaches at TalkTalk

History of this record
fine_usd2026-09-25
empty to 490000by admin
discovered2026-09-25
empty to 2015-10by admin
Added2026-09-25
First recordedby seedSource

First seen 2026-09-25 (Research). Record counts are as reported. Not legal advice.

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