HackingHealthcareManufacturingHealthcareStolen CredentialsCapture Stored DataData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedPIIIdentity (basic)Government IDMediumContained

TRANSMEDICS GROUP, INC.

bd_3efe04d0ff32c551 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 11, 2023

Filed

May 25, 2023

To disclose

6 weeks

Affected

73state residents only

Linked

4 records

Confidence

65%

Full breach record for TRANSMEDICS GROUP, INC. →

TransMedics, Inc. notified the NH AG of a data security incident where a malicious actor accessed the network between April 6-11, 2023. The breach affected personal information of 73 New Hampshire residents (current/former employees and dependents). TransMedics engaged forensic investigators, reported to the FBI, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d6 weeks discovery → filing

Incident timeline

undetected · 5 days

discovery → filing · 6 weeks / 44 days

Apr 6, 2023

Begins

Apr 11, 2023

Discovered

May 12, 2023

Scope determined

May 25, 2023

Filed

vs. sector median

3 wks faster

This filing is one of 4 records about the same incident.View merged incident

A leak claim by karakurt about this victim was first seen 31 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitekarakurtbd_0ea19bbb8bbdc0782023-04-24 · +31dVerified by operator

Regulatory filings (2) · sorted by filing gap

Maine State AGbd_cdff673d55d90f192023-05-25Candidate
Indiana State AGbd_f9b9617706ab7e342023-07-07 · +43dVerified

Name: TRANSMEDICS GROUP, INC.
norm: transmedics group

Name: TRANSMEDICS GROUP, INC.
norm: transmedics group
Industry: HealthcarellmManufacturingllm

Discovered: Apr 11, 2023
Breach occurred: Apr 6, 2023 – Apr 11, 2023
Undetected for: 5 daysoccurrence → discovery
Materiality determined: May 12, 2023
Notification sent: May 25, 2023
Affected individuals: 73state-resident count only
Data types: PIIIdentity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified FBIFiled notice with New Hampshire Attorney General
Initial access: valid_credentials

During the incident: Activated its incident response protocols
Engaged outside cybersecurity firm to conduct forensic investigation
Reported the incident to the FBI
Cooperating with FBI investigation
Implemented additional security measures
Offering complimentary credit monitoring and identity theft protection services through IDX
Changes made: Implemented additional security measures in its environment
Investing in enhancing cybersecurity protocols
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(44 days from discovery to filing)
Compliance flags: Leak >30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Maine State AGMay 25 · first

New Hampshire State AGMay 25 · first · this page

Indiana State AG+43d

Pattern: first filing May 25 (ME), last Jul 7 (IN) — a 43-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/transmedics-20230525.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 25, 2023
Raw hash: 3b2e56cdfd412e105e324d6276bd06fee6bfc235b52c30bb209bef2ddd8006e3

Linked disclosures

Ransomware claims (1)

Regulatory filings (2) · sorted by filing gap

Reporting entityTRANSMEDICS GROUP, INC.

Victim entityTRANSMEDICS GROUP, INC.

Incidentdiscovered Apr 11, 2023

Stated responseActivated its incident response protocols

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov