Neiman Marcus Data Breach History

This page tracks the Neiman Marcus data breach history and cybersecurity incidents affecting Neiman Marcus. BreachHistory currently indexes 7 publicly disclosed or catalogued incidents spanning 2007 through 2024, with approximately 7.0 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 Neiman Marcus 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 Neiman Marcus Data Breaches

The largest indexed incidents include the 2021 Unauthorized account access — 4.6M (May 2020 breach), the 2014 — Neiman Marcus: Hacked, 1.1M records, and the 2014 — Neiman Marcus: Neiman Marcus confirmed that its database of…, along with additional historical incidents involving exposed passwords, public databases, and large-scale data scraping. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Neiman Marcus or a regulator. Below is the list of large data breaches:

• 2021 2021 Unauthorized account access — 4.6M (May 2020 breach) — about 4.6M records exposed · Catalogued incident
• 2014 2014 — Neiman Marcus: Hacked, 1.1M records — about 1.1M records exposed · Catalogued incident
• 2014 2014 — Neiman Marcus: Neiman Marcus confirmed that its database of… — about 1.1M records exposed · Catalogued incident
• 2007 2007 — Neiman Marcus: Computer equipment was stolen containing files with… — about 160.0K records exposed · Catalogued incident
• 2024 2024 Snowflake breach — 64k customers — about 64.5K records exposed · Catalogued incident
• 2016 2016 — Neiman Marcus: Neiman Marcus has notified individuals of a data… — about 5.2K records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include passwords and login credentials, names, payment card and financial account data, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

Neiman Marcus Data Breach 2026

At the time of this update, no Neiman Marcus 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 Neiman Marcus 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 Neiman Marcus 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.