HackingTechnologyProfessional ServicesInformationVulnerability ExploitSupply Chain (3P Vendor)Multi-Stage ChainPIIIdentity (basic)LowContained

Diligent

bd_36639b85328877db · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 11, 2022

Filed

Jun 9, 2023

To disclose

30 weeks

Affected

1state residents only

Confidence

64%

Full breach record for Diligent →2 incidents on file

Leidos, Inc. notified affected individuals of a data breach involving its third-party vendor Diligent Corporation. An unauthorized individual exploited vulnerabilities in Diligent's ECMS platform to access documents containing personal information. The incident occurred between September and October 2022 and was discovered in November 2022. Leidos offered two years of credit monitoring.

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Incident timeline

undetected · 42 days

discovery → filing · 30 weeks / 210 days

Sep 30, 2022

Begins

Nov 11, 2022

Discovered

Jun 9, 2023

Filed

vs. sector median

+11 wks slower

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

Name: Leidos, Inc.
norm: leidos
Domain: diligent.com

Name: Diligent
norm: diligent
Domain: diligent.com
Industry: TechnologyllmProfessional Servicesllm

Discovered: Nov 11, 2022
Breach occurred: Sep 30, 2022 – Oct 1, 2022
Undetected for: 42 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 9, 2023
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1119 Automated Collection
Threat actor: External
Initial access: exploit_public_facing

During the incident: Diligent reviewed its security measures
Implemented multiple patches to address those vulnerabilities
Leidos restricted its use of the ECMS
Diligent took the ECMS offline to prevent further access to Leidos data from the internet
Offering you two (2) years of complimentary credit monitoring and identity protection services
Changes made: Examining our processes around our use of the ECMS
Requiring all new reports to be submitted directly to Leidos
Instructed all Leidos employees with access to the ECMS to refrain from uploading any new documents to the ECMS
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 30 weeks(210 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/OCP/Consumer-notification-letter-345.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 9, 2023
Raw hash: 821bcfce0cafb2669b35c8db0b473914a3404b284abb827ce3f1d7bbe9db465a

Reporting entityLeidos, Inc.

Victim entityDiligent

Incidentdiscovered Nov 11, 2022

Stated responseDiligent reviewed its security measures

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov