People search Benesse data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 2 Benesse-linked incidents, with headline counts up to 35M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Benesse breach history matters
Benesse operates in Technology (Japan). 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
2014 — — 35M records
Cataloged incident. Hacked. 35M records. Exposed categories include Names, emails, addresses, and other PII. BreachHistory cites approximately 350 affected records in this row. See the benesse2014 and canonical BreachHistory entry.
2014 — — Benesse: Hacking, 35,040,000 records
Cataloged incident. Data breach reported. educational services organization. Method: hacked. Source: Wikipedia List of data breaches. Exposed categories include Personal and demographic data. BreachHistory cites approximately 35M+ affected records in this row. See the benesse2014-35040000-wiki2 and canonical BreachHistory entry.
Patterns and analysis
- Mixed intrusion and disclosure events — appears across multiple Benesse 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: Review OAuth app permissions and revoke unused third-party integrations.
- Step 5: Bookmark the Benesse company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/benesse · Latest: benesse2014.
Sources: BreachHistory catalog (2 rows for Benesse), company and regulator disclosures cited in individual breach records.