HackingManufacturingManufacturingCustomer Data InvolvedIdentity (basic)Financial accountMediumResolved

ULTRA CLEAN HOLDINGS, INC.

bd_5db3f2dc02d3ea4d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 5, 2020

Filed

Dec 17, 2020

To disclose

19 weeks

Affected · nationwide

6,060127 in this filing

Linked

7 filings

Confidence

66%

Full breach record for ULTRA CLEAN HOLDINGS, INC. →2 incidents on file

Ultra Clean Holdings, Inc. reported an external system breach (hacking) occurring on August 3, 2020, discovered on August 5, 2020. The incident affected 6,060 individuals nationwide, including 127 Maine residents. Compromised data included names/personal identifiers combined with financial account or credit/debit card numbers. Notification was sent on October 23, 2020, offering two years of credit monitoring via Experian.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Aug 5, 2020 → Filed with AG Dec 17, 2020134d ✗ ME AG >90d19 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 2 days

discovery → filing · 19 weeks / 134 days

Aug 3, 2020

Begins

Aug 5, 2020

Discovered

Dec 17, 2020

Filed

vs. sector median

+8 wks slower

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

New Hampshire State AGbd_e5a5b45aee7556d32020-12-21 · +4dVerified
California State AGbd_c786788ea36385512020-12-23 · +6dVerified
Oregon State AGbd_10838ceb3c5347372020-11-10 · +37dVerified
Indiana State AGbd_03edadda5870d6cf2020-11-09 · +38dVerified

Show 2 more filings ↓up to 55d gap

Maine State AGbd_9f16c0167e7bd3582020-10-23 · +55dCandidate
Montana State AGbd_e8e9dcedfef9c1c52020-10-23 · +55dVerified

Name: ULTRA CLEAN HOLDINGS, INC.
norm: ultra clean

Name: ULTRA CLEAN HOLDINGS, INC.
norm: ultra clean
Industry: Manufacturingllm

Discovered: Aug 5, 2020
Breach occurred: Aug 3, 2020
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 23, 2020
Affected individuals: 6,060state + nationwide
Data types: Identity (basic)Financial account
Data elements: Financial account number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered complimentary two-year subscription to Experian’s IdentityWorks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(134 days from discovery to filing)
Compliance flags: ME AG >90d · 134dME resident >60d · 79d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Aug 5, 2020
→ Filed with AG: Dec 17, 2020
134d 90 days ME AG >90d
Maine
Discovered: Aug 5, 2020
→ Notified: Oct 23, 2020
79d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 5, 2020 → Filed with AG: Dec 17, 2020	134d	90 days	ME AG >90d
Maine	Discovered: Aug 5, 2020 → Notified: Oct 23, 2020	79d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

Maine State AGOct 23 · first

Montana State AGOct 23 · first

Indiana State AG+17d

Oregon State AG+18d

Maine State AG+55d · this page

New Hampshire State AG+59d

California State AG+61d

Pattern: first filing Oct 23 (ME), last Dec 23 (CA) — a 61-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/c8b49399-4a2a-4e48-9521-1d5f0be090b1.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 17, 2020
Raw hash: 0fa9c132cdfdfa1f02f15e605088782b79fcaf93158a2d165f834276bedcf899

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityULTRA CLEAN HOLDINGS, INC.

Victim entityULTRA CLEAN HOLDINGS, INC.

Incidentdiscovered Aug 5, 2020

Stated responseSent written notification to affected individuals

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov