People search Duolingo data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 3 Duolingo-linked incidents, with headline counts up to 2.7M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Duolingo breach history matters
Duolingo operates in Software (United States). Across indexed rows, recurring themes include cloud and database misconfiguration, unverified actor or scraping claims. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2023 — 2.6M users
Cataloged incident. Aug 2023. Exposed API allowed attackers to scrape 2.6M Duolingo users by submitting emails from prior breaches. Data sold on Breached forum. Exposed: emails, usernames, names, languages, XP. Duolingo said no systems compromised; implemented rate limits. Exposed categories include Emails, usernames, names, languages, XP. BreachHistory cites approximately 2.6M+ affected records in this row. See the duolingo2023 and canonical BreachHistory entry.
2023 — — Duolingo: Web scraping, 2,676,696 records
Cataloged incident. Data breach reported. educational services organization. Method: web scraping. Source: Wikipedia List of data breaches. Exposed categories include Personal and demographic data. BreachHistory cites approximately 2.7M+ affected records in this row. See the duolingo2023-2676696-wiki2 and canonical BreachHistory entry.
2023 — 2.7M scraped
Cataloged incident. Scraped via public API. Sold on BreachForums. Exposed categories include User IDs, usernames, emails. BreachHistory cites approximately 2.7M+ affected records in this row. See the duolingo-scrape-2023 and canonical BreachHistory entry.
Patterns and analysis
- Cloud and database misconfiguration — appears across multiple Duolingo catalog entries; prioritize controls that address this class of failure.
- Unverified actor or scraping claims — appears across multiple Duolingo 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: Bookmark the Duolingo company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/duolingo · Latest: duolingo2023.
Sources: BreachHistory catalog (3 rows for Duolingo), company and regulator disclosures cited in individual breach records.