Social EngineeringTechnologyInformationPhishingTargetedEmployee Data InvolvedPIIIdentity (basic)Government IDFinancialMediumContained

Seagate US LLC

bd_69776803af49778f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 1, 2016

Filed

Mar 9, 2016

To disclose

8 days

Affected

1state residents only

Linked

3 filings

Confidence

66%

Full breach record for Seagate US LLC →

Seagate US LLC notified Montana AG of a phishing incident on March 1, 2016, where targeted emails to HR/Payroll employees resulted in the disclosure of W-2 data (SSNs, names, addresses). The IRS was notified, and affected employees were offered 2 years of Experian identity protection.

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Incident timeline

discovery → filing · 8 days

Mar 1, 2016

Discovered

Mar 9, 2016

Filed

vs. sector median

17 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

California State AGbd_395dee149884c3022016-03-09Verified
Massachusetts State AGbd_02600a6754143f4b2016-03-14 · +5dVerified

Name: Seagate US LLC
norm: seagate us

Name: Seagate US LLC
norm: seagate us
Industry: Technologyllm

Discovered: Mar 1, 2016
Materiality determined: —
Notification sent: Mar 9, 2016
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)Government IDFinancial
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified the IRS and federal law enforcement
Initial access: phishing_link

During the incident: Notified the IRS and federal law enforcement
Offering at least a two-year membership in Experian’s ProtectMyID Alert
Arranged a dedicated call center run by a third party, Epiq
Supplement the phishing training conducted for all employees with additional training
Changes made: Supplement the phishing training conducted for all employees with additional training and further information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 days(8 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

California State AGMar 9 · first

Montana State AGMar 9 · first · this page

Massachusetts State AG+5d

Pattern: first filing Mar 9 (CA), last Mar 14 (MA) — a 5-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/Seagate-US-LLC.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 9, 2016
Raw hash: 723652304885e63d7b3fd193d1c413b85d1be0913a8eb5c5c7e018c08324e6e0

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entitySeagate US LLC

Victim entitySeagate US LLC

Incidentdiscovered Mar 1, 2016

Stated responseNotified the IRS and federal law enforcement

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov