MalwareTechnologyManufacturingInformationRansomwareData EncryptedTargetedPIIIdentity (basic)LowContained

MTS Systems Corporation

bd_fc06e17d9fbc6ae5 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 15, 2020

Filed

Mar 23, 2021

To disclose

18 weeks

Affected

3state residents only

Linked

3 filings

Confidence

64%

Full breach record for MTS Systems Corporation →2 incidents on file

MTS Systems Corporation notified individuals of a security incident discovered on November 15, 2020. An unauthorized actor infected the network with malware in October-November 2020, encrypting files and temporarily viewing data. The incident impacted personal information including names. MTS engaged third-party specialists, secured systems, and offered one year of credit monitoring via Experian.

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Incident timeline

undetected · 45 days

discovery → filing · 18 weeks / 128 days

Oct 1, 2020

Begins

Nov 15, 2020

Discovered

Mar 23, 2021

Filed

vs. sector median

on median

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Indiana State AGbd_256d0a0f843698172021-03-23Verified
Maine State AGbd_cd2dca33198531d22021-03-23Candidate

Name: MTS Systems Corporation
norm: mts systems

Name: MTS Systems Corporation
norm: mts systems
Industry: TechnologyllmManufacturingllm

Discovered: Nov 15, 2020
Breach occurred: Oct 1, 2020 – Nov 30, 2020
Undetected for: 45 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 23, 2021
Affected individuals: 3state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Immediately launched an investigation, with the assistance of third-party specialists
Took steps to secure our systems
Offering one year of complimentary access to credit monitoring, fraud consultation, and identity theft restoration services through Experian
Changes made: Reviewing our policies, procedures, and processes related to storage of and access to personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 weeks(128 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGMar 23 · first

Maine State AGMar 23 · first

Montana State AGMar 23 · first · this page

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://dojmt.gov/wp-content/uploads/mtsSamp.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 23, 2021
Raw hash: 0ee21e78b000279971f3cf7fc77303a0ea0f7ad61e58f58fcdf1b0267aefe3e1

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMTS Systems Corporation

Victim entityMTS Systems Corporation

Incidentdiscovered Nov 15, 2020

Stated responseImmediately launched an investigation, with the assistance of third-party specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov