Social EngineeringConstructionConstructionPhishingStolen CredentialsMulti-Stage ChainEmployee Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

SEMA Construction, Inc.

bd_0c20a52bba9ca7c9 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 4, 2020

Filed

Dec 30, 2020

To disclose

21 weeks

Affected

1state residents only

Confidence

66%

Full breach record for SEMA Construction, Inc. →

SEMA Construction, Inc. notified employees of a phishing campaign that compromised account credentials and potentially exposed personal information including SSNs, bank details, and driver's licenses. Forensic investigators confirmed the compromise in August 2020. Notices were sent to affected employees starting October 2020, with additional notifications in December 2020. The company provided 12 months of credit monitoring.

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Incident timeline

discovery → filing · 21 weeks / 148 days

Aug 4, 2020

Discovered

Dec 30, 2020

Filed

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

Name: SEMA Construction, Inc.
norm: sema construction

Name: SEMA Construction, Inc.
norm: sema construction
Industry: Constructionllm

Discovered: Aug 4, 2020
Materiality determined: —
Notification sent: Oct 1, 2020
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Began working with third-party forensic investigators
Took steps to implement additional procedures to protect the security of employee information and limit account access
Launched an investigation to determine the nature and scope of the event
Providing you with access to 12 months of credit monitoring and identity protection services through Epiq
Changes made: Reviewing our policies, procedures, and processes related to handling of and access to personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(148 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://dojmt.gov/wp-content/uploads/semaSamp.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 30, 2020
Raw hash: 167f84aa942bfee010a675b2ac471564520dd12866e242c21e0fa1baca6ee8be

Reporting entitySEMA Construction, Inc.

Victim entitySEMA Construction, Inc.

Incidentdiscovered Aug 4, 2020

Stated responseBegan working with third-party forensic investigators

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov