HackingTechnologyManufacturingInformationData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Belden, Inc.

bd_26de5f7e93f79fc0 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 18, 2020

Filed

Nov 24, 2020

To disclose

6 days

Affected

1state residents only

Linked

6 filings

Confidence

65%

Grass Valley USA, LLC notified Montana residents of a data incident affecting Belden, Inc. (Grass Valley's former owner). Belden IT detected unusual activity on Nov 12, 2020, leading to the discovery that an outside party accessed servers containing employee PII, including SSNs and bank info. Belden engaged forensic experts and law enforcement (FBI, DHS). Grass Valley is offering 24 months of Experian IdentityWorks to affected employees.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 6 days

discovery → filing · 6 days

Nov 12, 2020

Begins

Nov 18, 2020

Discovered

Nov 24, 2020

Filed

vs. sector median

18 wks faster

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Oregon State AGbd_2b9f063d9acf2dd52020-12-14 · +20dVerified
Maine State AGbd_857f13e57e90983f2020-12-14 · +20dVerified
Massachusetts State AGbd_913bc20ba68395972020-12-14 · +20dVerified
Indiana State AGbd_fd12990a74b001a92020-12-14 · +20dVerified

Show 1 more filing ↓up to 21d gap

New Hampshire State AGbd_16522eb0e4ba475a2020-12-15 · +21dVerified

Name: GRASS VALLEY USA, LLC
norm: grass valley usa

Name: Belden, Inc.
norm: belden
Industry: TechnologyllmManufacturingllm

Discovered: Nov 18, 2020
Breach occurred: Nov 12, 2020 – Nov 15, 2020
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 24, 2020
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified the F.B.I.Notified the Department of Homeland Security

During the incident: Triggered its cybersecurity incident response plan
Deployed teams of internal IT specialists
Engaged leading third-party cybersecurity forensic experts and other advisors
Working with regulatory and law enforcement officials, including the F.B.I. and Department of Homeland Security
Engaged legal counsel to help us notify appropriate regulatory authorities
Continuously monitoring for any suspicious activity on its systems
Deployed additional resources to reinforce the security of its systems
Offering a complimentary twenty-four month membership of Experian IdentityWorks SM Credit 3B
Changes made: Deployed additional resources to reinforce the security of its systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 days(6 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Montana State AGNov 24 · first · this page

Oregon State AG+20d

Maine State AG+20d

Massachusetts State AG+20d

Indiana State AG+20d

New Hampshire State AG+21d

Pattern: first filing Nov 24 (MT), last Dec 15 (NH) — a 21-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://dojmt.gov/wp-content/uploads/grassSamp.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 24, 2020
Raw hash: 6cd26d32fca742894855cca527a361625614d47032a66f92f2172ed6ab1b7d42

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityGRASS VALLEY USA, LLC

Victim entityBelden, Inc.

Incidentdiscovered Nov 18, 2020

Stated responseTriggered its cybersecurity incident response plan

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov