Case file: Coupang, Inc.
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 15, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Dec 24, 2025
- Discovered
- No discovery date stated in the letters we read
- First public signal
- Dec 29, 2025, when Coupang, Inc. told investors of a cyber incident in an SEC Form 8-K (Item 1.05). No agency record of the incident is on file yet
- State and federal records
- 1 filing, Dec 29, 2025
- Residents counted
- No state publishes a resident count for this incident
- Everyone affected
- No filing gives a total
- Information exposed
- Not stated in the listings
- Offered to those affected
- No monitoring offer found in the letters we read
- Third party named
- Yes, the letter attributes the incident to a vendor or service provider
- Prior incidents
- 1 earlier incident on record for this organization
The investor filing: Form 8-K of Dec 29, 2025. An 8-K is tied to the incident by the company and the dates, so read it before relying on it. It says: "On December 24, 2025 (PST) and December 28, 2025 (PST), Coupang Corp., a wholly-owned Korean subsidiary (“Coupang Corp.”) of Coupang, Inc. (“Coupang, Inc.,” “our,” or “we”) (Coupang Corp., together with Coupang, Inc."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| SEC Form 8-K SEC Form 8-K | Dec 29, 2025 | Not published | 5 days from breach end | 8-K Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
Prior incidents by Coupang, Inc.
| Records | Breach window | Filed with | People |
|---|---|---|---|
| Dec 16, 2025 | Nov 18, 2025 | SEC Form 8-K | Not published |
Filings more than six months apart are shown as separate incidents, unless they report the same breach window.
Sources and method
Records as published by SEC Form 8-K. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 1 letter read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.