MalwareTechnologyInformationRansomwareData ExfiltratedData EncryptedRansom DemandedPIIIdentity (basic)LowContained

Semtech (formerly Sierra Wireless)

bd_205bf88d01e5a6b4 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 20, 2021

Filed

Oct 22, 2021

To disclose

31 weeks

Affected

7state residents only

Linked

5 filings

Confidence

66%

Full breach record for Semtech (formerly Sierra Wireless) →2 incidents on file

Sierra Wireless, Inc. disclosed a ransomware incident affecting internal IT systems and corporate websites. Unauthorized access occurred between January 12, 2021, and March 20, 2021. The attacker exfiltrated a limited subset of personal information, including names and other PII. Sierra engaged cybersecurity firms and law enforcement, implemented additional security measures, and provided 24 months of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 67 days

discovery → filing · 31 weeks / 216 days

Jan 12, 2021

Begins

Mar 20, 2021

Discovered

Oct 22, 2021

Filed

vs. sector median

+12 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_4d92ca9f8d36cca62021-10-22Verified
Indiana State AGbd_674efbbb5dddad142021-10-22Verified
Maine State AGbd_758ddb96f3573bd32021-10-22Verified
New Hampshire State AGbd_e3f3a53d88c739582021-10-22Verified

Name: Sierra
norm: sierra
Domain: sierratradingposts.com

Name: Semtech (formerly Sierra Wireless)
norm: semtech formerly sierra wireless
Domain: sierrawireless.com
Industry: Technologyllm

Discovered: Mar 20, 2021
Breach occurred: Jan 12, 2021 – Mar 20, 2021
Undetected for: 67 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 7state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement

During the incident: Took steps to secure our systems
Launched an investigation
Engaged a leading cybersecurity firm to assist
Notified law enforcement
Changes made: Implemented additional security measures designed to enhance the security of our network, systems, and data
Arranged for 24 months of access to the TransUnion myTrueIdentity service at no cost
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 31 weeks(216 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Massachusetts State AGOct 22 · first

Indiana State AGOct 22 · first

Maine State AGOct 22 · first

New Hampshire State AGOct 22 · first

Montana State AGOct 22 · 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/OCP/Consumer-Notification-Letter-31.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 22, 2021
Raw hash: 5feb921931ba31211bbf6d588636952dfe7480e91c190fb6a8a4abe0a8fc187d

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entitySierra

Victim entitySemtech (formerly Sierra Wireless)

Incidentdiscovered Mar 20, 2021

Stated responseTook steps to secure our systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov