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Identity breach database · 2024 · Stolen credentials

Data Cymru ransomware through a 12-year-old test account with the password Password1

Data Cymru, the Welsh local government data unit, disclosed on November 11, 2024 that a ransomware attack had disrupted its systems. The ICO later found that the attacker got in on November 1, 2024 through 'Test2', a test account its IT provider Ogi Networks created in January 2012 with the password 'Password1', and that local administrator accounts on the three affected systems had kept the same password for more than 12 years, which The Register reports let the attacker reuse harvested hashes. The attacker took 42GB and encrypted 182.7GB, exposing personal information on 3,300 people, most of them children; both organizations introduced MFA and account reviews afterwards.

Victim
Data Cymru (Local Government Data Unit Wales), with its IT provider Ogi Networks
Industry
Government
Country
United Kingdom
Intrusion began
Nov 1, 2024
First disclosed
Nov 11, 2024
Actor
Financially motivated
Initial access
Stolen credentials
Identity control that failed
Identity lifecycle
MFA
Not disclosed
Abused identity
Human account
Records affected
3,300 (People whose personal information was taken, most of them children, per the ICO.)
Disclosed cost
Not disclosed

The identity lesson

A test account that was no longer needed kept a guessable password for more than 12 years because nobody reviewed it. Routine reviews that disable test and dormant accounts, a banned-password list, MFA on remote access and unique local administrator passwords would each have broken the chain.

Regulatory and legal outcome

October 20, 2026: the UK ICO issued reprimands, without a fine, to Ogi Networks Limited for infringing UK GDPR Articles 32(1)(b) and 32(1)(d), and to Data Cymru for infringing Articles 28(4), 32(1)(b) and 32(1)(d).

Go deeper on SWI

Sources

  1. 'Password1' is not an appropriate password: Two Welsh organisations reprimanded after cyber-attack exposed children's information, Information Commissioner's Office, Oct 20, 2026
  2. Data Cymru has been the victim of a cybersecurity incident (archived), Data Cymru, Nov 11, 2024
  3. 'Password1' and a forgotten test account land Welsh outfits in hot water, The Register, Oct 20, 2026

Record verified Nov 5, 2026 against the sources above. Corrections: contact us.

Related incidents

Cite this record

SWI Community Team. (2026). Data Cymru ransomware through a 12-year-old test account with the password Password1. Identity Breach Database, Start with Identity. https://startwithidentity.com/breaches/incidents/2024-data-cymru-ogi-test2-account/

Part of the Identity Breach Database, free to reuse under CC BY 4.0. Analysis across every record: Identity Breach Report 2026.