Clustered 4 filings across 3 jurisdictions · filing window Mar 21, 2024 → Apr 26, 2024. View entity profile → Other incidents for this victim →
incident inc_353784c9c4144137 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Time between earliest and latest filing
Not recorded for this incident
CA ID IN
all State AG
per-filing reported counts
State AGs report only their own residents; bars show per-filing counts.
Earliest sighting first · deep chronology in Litigation Timeline
Nov 2, 2023
When the intrusion reportedly occurred, per the linked filings
Nov 2, 2023
Reported by IDAHO AG filing
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2023-11-02 and was reported on 2024-03-21. 143 Indiana residents were affected. 11,744 individuals affected in total.
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2024-02-13 and was reported on 2024-04-26. 15 Indiana residents were affected. 5,577 individuals affected in total.
Affected (this filing): 5,577
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.
Affected (this filing): 11,744
Massachusetts Mutual Life Insurance Company reported a ransomware incident involving third-party provider Infosys McCamish Systems (IMS) on November 2, 2023. The breach affected 39 Idaho residents, exposing names, Social Security numbers, dates of birth, and addresses. IMS engaged Unit 42 and EY for investigation and remediation. No evidence of data misuse was found, but 24 months of Experian IdentityForce was offered to affected individuals.
Affected (this filing): 39
Massachusetts Mutual Life Insurance Company (Newport) reported a data breach involving a third-party service provider, IMS. The incident occurred on October 29, 2023. Affected data includes names, addresses, dates of birth, and Social Security numbers of plan participants and beneficiaries, including minors. No evidence of misuse was found. The company offered two years of complimentary identity protection via Experian IdentityWorks.