People search Cigna data breach timeline because regulated data and trust are existential—one incident triggers class actions and regulator exams. BreachHistory indexes 5 Cigna-linked incidents, with headline counts up to 4K+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Cigna breach history matters
Cigna operates in Healthcare (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 — — Cigna: Location of breached information: Hacking/IT…
Cataloged incident. Location of breached information: Hacking/IT Incident Business associate present: No Exposed categories include Personal information. BreachHistory cites approximately 4K+ affected records in this row. See the cigna2018 and canonical BreachHistory entry.
2015 — — Cigna: Location of breached information: Unauthorized…
Cataloged incident. Location of breached information: Unauthorized Access/Disclosure Business associate present: No Exposed categories include Personal information. BreachHistory cites approximately 592 affected records in this row. See the cigna2015 and canonical BreachHistory entry.
2014 — — Cigna: Location of breached information: Loss Business…
Cataloged incident. Location of breached information: Loss Business associate present: Yes Exposed categories include Personal information. BreachHistory cites approximately 527 affected records in this row. See the cigna2014 and canonical BreachHistory entry.
2012 — — Cigna: On March 23, 2012, an employee sent an unencrypted…
Unverified claim — treat actor counts cautiously. On March 23, 2012, an employee sent an unencrypted document to the personal emails of herself and her son. The document contained the first names of customers and their Social security numbers. Cigna became aware of the incident on March 27 and took immediate action. The employee claimed that she had sent the document to obtain help with work from her son. She confirmed that both she and her son had deleted the email and was fired. Exposed categories include Personal information. No attested victim count is published for this row yet. See the cigna2012 and canonical BreachHistory entry.
2006 — — Cigna: The July 11 theft of an employee's laptop left…
Cataloged incident. The July 11 theft of an employee's laptop left sensitive data exposed. Names, tax identification numbers and Social Security numbers of people who used their Social Security number as a tax ID were exposed. Exposed categories include Personal information. BreachHistory cites approximately 156 affected records in this row. See the cigna2006 and canonical BreachHistory entry.
Patterns and analysis
- Mixed intrusion and disclosure events — appears across multiple Cigna 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: Watch for medical-ID theft and billing fraud after health-data incidents.
- Step 5: Bookmark the Cigna company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/cigna · Latest: cigna2018.
Sources: BreachHistory catalog (5 rows for Cigna), company and regulator disclosures cited in individual breach records.