Wyndham Hotels & Resorts Data Breach History

This page tracks the Wyndham Hotels & Resorts data breach history and cybersecurity incidents affecting Wyndham Hotels & Resorts (United States). BreachHistory currently indexes 6 publicly disclosed or catalogued incidents spanning 2009 through 2026, with approximately 1.1 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 Wyndham Hotels & Resorts 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 2 remain unverified claims pending independent verification.

Largest Wyndham Hotels & Resorts Data Breaches

The largest indexed incidents include the 2012 — 600,000+ records (2008 — 2010 incidents), the 2010 — Wyndham Hotels & Resorts: International hotel group Wyndham Hotels and…, and the 2009 — Wyndham Hotels & Resorts: In mid-September 2008, the company discovered that…, 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 Wyndham Hotels & Resorts or a regulator. Below is the list of large data breaches:

• 2012 2012 — 600,000+ records (2008–2010 incidents) — about 600.0K records exposed · Catalogued incident
• 2010 2010 — Wyndham Hotels & Resorts: International hotel group Wyndham Hotels and… — about 500.0K records exposed · Unverified claim
• 2009 2009 — Wyndham Hotels & Resorts: In mid-September 2008, the company discovered that… — about 21.0K records exposed · Catalogued incident
• 2026 2026 Wyndham — TheHatman Azure tenant directory sale claim (unverified; ~9K) — about 9.0K records exposed · Unverified claim
• 2014 2014 — Wyndham Hotels & Resorts: name, address, ssn, financial account info Location… — about 1 records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include 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.

Wyndham Hotels & Resorts Data Breach 2026

At the time of this update, BreachHistory catalogues 1 2026 incident related to Wyndham Hotels & Resorts. Most recent entry: 2026 Wyndham — TheHatman Azure tenant directory sale claim (unverified; ~9K). 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 Wyndham Hotels & Resorts 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 Wyndham Hotels & Resorts 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.