HackingTechnologyInformationPhishingStolen CredentialsMulti-Stage ChainData ExfiltratedPIIIdentity (basic)LowActive

Mattson Technology, Inc.

bd_e53e03c6a7ad0796 · schema v1 · pii pii-v1

Severity

Low

Discovered

Oct 3, 2022

Filed

Mar 17, 2023

To disclose

24 weeks

Affected

2state residents only

Linked

4 filings

Confidence

64%

Full breach record for Mattson Technology, Inc. →4 incidents on file

Mattson Technology, Inc. notified Montana residents of a security incident where an unauthorized individual accessed the network between July 8 and October 3, 2022, following a suspicious email on October 3, 2022. The incident involved the access and removal of files containing personal information. Mattson engaged third-party specialists, notified law enforcement, and offered 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 87 days

discovery → filing · 24 weeks / 165 days

Jul 8, 2022

Begins

Oct 3, 2022

Discovered

Mar 17, 2023

Filed

vs. sector median

+5 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Massachusetts State AGbd_666f8fc027f131a22023-03-17Verified
Maine State AGbd_c844212627af85ca2023-03-17Candidate
New Hampshire State AGbd_feb25c8137deedfe2023-03-27 · +10dVerified

Name: Mattson Technology, Inc.
norm: mattson technology

Name: Mattson Technology, Inc.
norm: mattson technology
Industry: Technologyllm

Discovered: Oct 3, 2022
Breach occurred: Jul 8, 2022 – Oct 3, 2022
Undetected for: 87 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 17, 2023
Affected individuals: 2state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: External
Regulator citations: reported this to federal law enforcementnotifying the appropriate regulators, as required
Initial access: phishing_link

During the incident: Took steps to secure our network
Launched an investigation with the assistance of third-party computer specialists
Reported this to federal law enforcement
Offering you 12 months of complimentary credit monitoring through Equifax
Changes made: Implementing additional training to employees
Reviewing our policies, procedures, and protocols to reduce the likelihood of a similar event from occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(165 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGMar 17 · first

Maine State AGMar 17 · first

Montana State AGMar 17 · first · this page

New Hampshire State AG+10d

Pattern: first filing Mar 17 (MA), last Mar 27 (NH) — a 10-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/OCP/Consumer-notification-letter-123.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 17, 2023
Raw hash: 72b24e151b3148fd310ff94a5826e1b90cc4e9a81c2c9a8d058d1e66309be36f

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMattson Technology, Inc.

Victim entityMattson Technology, Inc.

Incidentdiscovered Oct 3, 2022

Stated responseTook steps to secure our network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov