People search Quora data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 4 Quora-linked incidents, with headline counts up to 100M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Quora breach history matters
Quora operates in Technology (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
2018 — — 100M records
Cataloged incident. Hacked. 100M records. Exposed categories include Names, emails, addresses, and other PII. BreachHistory cites approximately 1K+ affected records in this row. See the quora-20182018 and canonical BreachHistory entry.
2018 — — Quora: Hacking, 10,000,000 records
Cataloged incident. Login details and private messages were compromised by "a malicious third party". Exposed categories include Personal and demographic data. BreachHistory cites approximately 10M+ affected records in this row. See the quora2018-iib and canonical BreachHistory entry.
2018 — — Quora: Hacking, 100,000,000 records
Cataloged incident. Data breach reported. web organization. Method: hacked. Source: Wikipedia List of data breaches. Exposed categories include Personal and demographic data. BreachHistory cites approximately 100M+ affected records in this row. See the quora2018-100000000-wiki2 and canonical BreachHistory entry.
2018 — 100M accounts
Cataloged incident. Q&A platform. Unauthorized access Nov 2018. Exposed categories include Names, emails, hashed passwords. BreachHistory cites approximately 100M+ affected records in this row. See the quora-inc-2018 and canonical BreachHistory entry.
Patterns and analysis
- Mixed intrusion and disclosure events — appears across multiple Quora 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 Quora company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/quora · Latest: quora-20182018.
Sources: BreachHistory catalog (4 rows for Quora), company and regulator disclosures cited in individual breach records.