HackingTechnologyInformationPhishingStolen CredentialsMulti-Stage ChainCustomer Data InvolvedData ExfiltratedIdentity (basic)Government IDMediumActive

Mattson Technology, Inc.

bd_feb25c8137deedfe · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 3, 2022

Filed

Mar 27, 2023

To disclose

25 weeks

Affected

4state residents only

Linked

4 filings

Confidence

65%

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

Mattson Technology, Inc. notified the New Hampshire AG of a data event affecting 4 NH residents. Between July 8 and Oct 3, 2022, an unauthorized actor accessed the network after employees received a suspicious email. Names and SSNs were potentially accessed. Investigation ongoing as of March 2023 filing.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 87 days

discovery → filing · 25 weeks / 175 days

Jul 8, 2022

Begins

Oct 3, 2022

Discovered

Feb 16, 2023

Scope determined

Mar 27, 2023

Filed

vs. sector median

+6 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_666f8fc027f131a22023-03-17 · +10dVerified
Maine State AGbd_c844212627af85ca2023-03-17 · +10dCandidate
Montana State AGbd_e53e03c6a7ad07962023-03-17 · +10dCandidate

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: Feb 16, 2023
Notification sent: Mar 17, 2023
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementNotified New Hampshire Attorney General Consumer Protection Bureau
Initial access: phishing_link

During the incident: Took steps to secure their network
Launched an investigation with the assistance of third-party cybersecurity specialists
Undertook a thorough review of the impacted files
Notified federal law enforcement
Provided written notice to relevant regulators and to the three major credit reporting agencies
Providing access to credit monitoring services for twelve (12) months, through Equifax
Changes made: Implementing additional safeguards and training to its employees
Reviewing 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: 25 weeks(175 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

New Hampshire State AG+10d · this page

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://mm.nh.gov/files/uploads/doj/remote-docs/mattson-technology-20230327.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 27, 2023
Raw hash: dcd2541bae1b6749010d5eee975e3baf71d00184f4ccd388834acce03e672871

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 their network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov