People search Morgan Stanley data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 3 Morgan Stanley-linked incidents, with headline counts up to 350K+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Morgan Stanley breach history matters
Morgan Stanley operates in Finance (United States). Across indexed rows, recurring themes include third-party and supply-chain exposure, zero-day exploitation and malware. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2021 — Accellion FTA
Cataloged incident. Vendor Guidehouse breached via Accellion FTA vulnerability. Names, addresses, DOB, SSNs, and corporate company names of StockPlan Connect participants. Exposed categories include Names, Addresses, Social Security numbers, Dates of birth. No attested victim count is published for this row yet. See the ms2021 and canonical BreachHistory entry.
2015 — 350k wealth management clients
Cataloged incident. Employee stole account data for ~350k wealth management clients. ~900 clients' data briefly posted online. Account names and numbers. Exposed categories include Names, Employee data. BreachHistory cites approximately 350K+ affected records in this row. See the ms2015 and canonical BreachHistory entry.
2014 — — Morgan Stanley: An employee of Morgan Stanley stole customer…
Cataloged incident. An employee of Morgan Stanley stole customer information on 350,000 clients including account numbers. Additional information on what other information was captured has not yet been released. Files for as many as 900 clients ended up on a website. The employee has since been fired and the bank is notifying all of the individuals affected. The FBI is currently investigating the incident.More Information: http://www.bloomberg.com/news/print/2015-01-05/morgan-stanley-fires-empl... Exposed categories include Personal information. BreachHistory cites approximately 350K+ affected records in this row. See the morgan-stanley2014 and canonical BreachHistory entry.
Patterns and analysis
- Third-party and supply-chain exposure — appears across multiple Morgan Stanley catalog entries; prioritize controls that address this class of failure.
- Zero-day exploitation and malware — appears across multiple Morgan Stanley 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 Morgan Stanley company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/morgan-stanley · Latest: ms2021.
Sources: BreachHistory catalog (3 rows for Morgan Stanley), company and regulator disclosures cited in individual breach records.