Various Data Owners, As Identified in Appendix to Letter
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Full breach record for Various Data Owners, As Identified in Appendix to Letter →Morgan Stanley, a financial services company, reported a data breach affecting various entities to whom it provides StockPlan Connect Services. The breach occurred at a third-party vendor, Guidehouse. The incident, which took place on January 20, 2021, and was discovered on May 20, 2021, involved an external system breach or hacking. The personal information of 116 Maine residents was compromised, including names and Social Security numbers. In response, Guidehouse offered affected individuals 24 months of credit monitoring and identity theft protection services through Experian IdentityWorks. Consumer notifications were sent on July 2, 2021.
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Incident timeline
Jan 20, 2021
Begins
May 20, 2021
Discovered
Jul 2, 2021
Filed
vs. sector median
2 wks faster
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.