Nationwide Data Breach History

This page tracks the Nationwide data breach history and cybersecurity incidents affecting Nationwide (United States). BreachHistory currently indexes 5 publicly disclosed or catalogued incidents spanning 2006 through 2024, with approximately 1.0 million records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.

The Nationwide breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed, while 1 remain unverified claims pending independent verification.

Largest Nationwide Data Breaches

The largest indexed incidents include the 2012 — Nationwide: A portion of the computer network used by…, the 2007 — Nationwide: A laptop was stolen from the car of a claims…, and the 2010 — Nationwide: Customers were mailed the cards of other customers, 62 records. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Nationwide or a regulator. Below is the list of large data breaches:

• 2012 2012 — Nationwide: A portion of the computer network used by… — about 1.0M records exposed · Catalogued incident
• 2007 2007 — Nationwide: A laptop was stolen from the car of a claims… — about 140 records exposed · Unverified claim
• 2010 2010 — Nationwide: Customers were mailed the cards of other customers, 62 records — about 62 records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include email addresses, names, physical addresses, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

Nationwide Data Breach 2026

At the time of this update, no Nationwide data breach has been catalogued for 2026. New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.

What To Do If You Were Affected

If you believe your account may have been involved in a Nationwide data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.

This Nationwide breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.