The Hartford Data Breach History

This page tracks the The Hartford data breach history and cybersecurity incidents affecting The Hartford (United States). BreachHistory currently indexes 4 publicly disclosed or catalogued incidents spanning 2007 through 2024, with approximately 10 thousand 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 The Hartford 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.

Largest The Hartford Data Breaches

The largest indexed incidents include the 2012 — The Hartford: An employee of Greenplum was robbed of a laptop…, the 2007 — The Hartford: Activity from a third party was detected on the website, 526 …, and the 2011 — The Hartford: People who logged into Hartford's server between…. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by The Hartford or a regulator. Below is the list of large data breaches:

• 2012 2012 — The Hartford: An employee of Greenplum was robbed of a laptop… — about 9.6K records exposed · Catalogued incident
• 2007 2007 — The Hartford: Activity from a third party was detected on the website, 526 records — about 526 records exposed · Catalogued incident
• 2011 2011 — The Hartford: People who logged into Hartford's server between… — about 300 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.

The Hartford Data Breach 2026

At the time of this update, no The Hartford 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 The Hartford 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 The Hartford 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.