ON

Confirmed breach

Ogi Networks and Data Cymru data breach

GBUnited Kingdom

The Register, Infosecurity Magazine and Security.nl reported a data breach at Ogi Networks and Data Cymru (United Kingdom) on 20 October 2026, and it has been confirmed. It affected 3,300 people. Exposed: Personal information and Personal data.

Status

Confirmed breach

People affected

3,300 people

Reported

20 October 2026

What was exposed

• Personal information
• Personal data

How it happened

How

Ransomware ransomware breach source

Sources

• News reportThe Register'Password1' and a forgotten test account land Welsh outfits in hot water
• News reportInfosecurity MagazineChildren’s Data Stolen After Ransomware Attack Compromises ‘Password1’ Account
• News reportSecurity.nl'Password1' leidt tot datalek met gegevens van ruim drieduizend mensen

If Ogi Networks and Data Cymru had your data

1. Look for Ogi Networks and Data Cymru’s own notice or letter: it should say what of yours was involved. Keep it.
2. Expect scams that use your details: calls, texts or emails pretending to be Ogi Networks and Data Cymru, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

• What to do after a data breach →

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4. LA Legal Aid AgencyreportedGBUnited Kingdom · 15 October 2026 Legal records –not reported
5. IO Isle of Wight CouncilreportedGBUnited Kingdom · 15 October 2026 Children's details –not reported

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From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Found a mistake? Tell us and we correct it.