Social EngineeringTechnologyManufacturingInformationPhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedTargetedIdentity (basic)Government IDEmploymentMediumContained

Electronic Scientific Industries, Inc.

bd_fd29ca8221ec481f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 18, 2019

Filed

Apr 23, 2019

To disclose

5 days

Affected

1state residents only

Confidence

66%

Full breach record for Electronic Scientific Industries, Inc. →

ESI, a subsidiary of MKS Instruments, notified NH AG of a phishing incident affecting one NH resident. Unauthorized access to an employee email account occurred between April 9-20, 2019. Data exposed included SSN, stock info, and employee ID. ESI secured accounts, engaged forensics, notified FBI, and offered credit monitoring.

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Incident timeline

undetected · 9 days

discovery → filing · 5 days

Apr 9, 2019

Begins

Apr 18, 2019

Discovered

Apr 23, 2019

Filed

vs. sector median

12 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: MKS Instruments, Inc
norm: mks instruments
Domain: mksinst.com

Name: Electronic Scientific Industries, Inc.
norm: electronic scientific
Industry: TechnologyllmManufacturingllm

Discovered: Apr 18, 2019
Breach occurred: Apr 9, 2019 – Apr 20, 2019
Undetected for: 9 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 17, 2019
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDEmployment
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified FBI Cybercrime unit
Initial access: phishing_link

During the incident: Took immediate response measures to secure the compromised email account and the employee's company login
Notified the FBI Cybercrime unit
Initiated internal investigation
Engaged an IT forensic services provider
Shut down the email account
Required its owner and certain other employees to change their passwords
Changes made: Enhanced its existing security protocols
Heightened the priority of certain security-related projects
Promote awareness of cyber-intrusions among our employees
Monitor our company's systems and adjust practices to enhance the security of sensitive information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 days(5 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/electronic-scientific-industries-20190523.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 23, 2019
Raw hash: c789f22e5342f1ad36a06254b02817e33e447a35e6526e388120d36b1103fd65

Reporting entityMKS Instruments, Inc

Victim entityElectronic Scientific Industries, Inc.

Incidentdiscovered Apr 18, 2019

Stated responseTook immediate response measures to secure the compromised email account and the employee's company login

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov