DisclosureLens
Social EngineeringEnergy & UtilitiesUtilitiesPhishingData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedGovernment IDIdentity (basic)MediumContained

Duquesne Light Company

bd_857f20628d60b160 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 16, 2021

Filed

Nov 1, 2021

To disclose

20 weeks

Affected

Not disclosed

Confidence

65%
Full breach record for Duquesne Light Company2 incidents on file

Duquesne Light Company (DLC) notified New Hampshire regulators of a data security incident discovered on June 16, 2021. An external actor used phishing emails to compromise a small number of company email accounts, potentially exposing employee and job applicant personal information including names, Social Security numbers, and driver's license numbers. DLC contained the initial breach, discovered a re-compromise on July 27, 2021, and engaged forensic investigators. DLC offered 12 months of Experian IdentityWorks to affected individuals.

Incident timeline

discovery → filing · 20 weeks / 138 days

Jun 16, 2021

Discovered

Nov 1, 2021

Filed

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

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.