People search Groupon data breach timeline because millions of customers entrust payment and identity data to everyday transactions. BreachHistory indexes 1 Groupon-linked incident, with headline counts up to 170 in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Groupon breach history matters
Groupon operates in Retail (United States). Across indexed rows, recurring themes include mixed intrusion and disclosure events. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2012 — — Groupon: An ongoing flaw in Groupon's email link encryption…
Cataloged incident. An ongoing flaw in Groupon's email link encryption exposes the emails of some Groupon users when specific terms are added into Google searches of Groupon's site. Groupon believes that the problem is caused by users publicly pasting their Groupon deals online. Groupon is working on a solution to exclude the results. Exposed categories include Personal information. BreachHistory cites approximately 170 affected records in this row. See the groupon2012 and canonical BreachHistory entry.
Patterns and analysis
- Mixed intrusion and disclosure events — appears across multiple Groupon catalog entries; prioritize controls that address this class of failure.
- Record-count hygiene — BreachHistory indexes actor-cited figures separately from company-confirmed totals; read each row's technicalWriteup before treating counts as fact.
- 2026 monitoring — New disclosures roll into this timeline as they are verified or labeled unverified per catalog policy.
What to do if you may be affected
- Step 1: Enable phishing-resistant MFA on every account tied to this brand.
- Step 2: Use unique passwords and a password manager—breach rows often involve credential reuse.
- Step 3: Monitor official company breach notices and regulator filings, not dark-web downloads.
- Step 4: Use virtual card numbers for online checkout where your bank supports it.
- Step 5: Bookmark the Groupon company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/groupon · Latest: groupon2012.
Sources: BreachHistory catalog (1 row for Groupon), company and regulator disclosures cited in individual breach records.