Sears Data Breach History

This page tracks the Sears data breach history and cybersecurity incidents affecting Sears (United States). BreachHistory currently indexes 7 publicly disclosed or catalogued incidents spanning 2006 through 2018, with approximately 97 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 Sears 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 Sears Data Breaches

The largest indexed incidents include the 2017 — Sears: Information on this security breach is provided by…, the 2013 — Sears: An assistant manager was forced to open a Kmart…, and the 2006 — Sears: A spreadsheet with the business or individual…. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Sears or a regulator. Below is the list of large data breaches:

• 2017 2017 — Sears: Information on this security breach is provided by… — about 95.5K records exposed · Catalogued incident
• 2013 2013 — Sears: An assistant manager was forced to open a Kmart… — about 788 records exposed · Catalogued incident
• 2006 2006 — Sears: A spreadsheet with the business or individual… — about 196 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.

Sears Data Breach 2026

At the time of this update, no Sears 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 Sears 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 Sears 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.