HackingFinancial ServicesTechnologyFinanceVulnerability ExploitZero-DaySupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedPIIIdentity (basic)Government IDMediumContained

Atlantic Shareholder Services

bd_fdb7a24a8811f447 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 31, 2023

Filed

Sep 22, 2023

To disclose

16 weeks

Affected

Not disclosed

Confidence

67%

Sovos Compliance, LLC reported a security event involving Atlantic Shareholder Services on May 31, 2023. Unauthorized actors exploited a vulnerability in Progress Software's MOVEit Transfer application to download personal information. Sovos took the application offline, retained experts, and notified law enforcement. Affected individuals are offered two years of credit monitoring via Kroll.

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Incident timeline

discovery → filing · 16 weeks / 114 days

May 31, 2023

Discovered

Sep 22, 2023

Filed

vs. sector median

+8 wks slower

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

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

Name: Sovos Compliance, LLC
norm: sovos compliance

Name: Atlantic Shareholder Services
norm: atlantic shareholder services
Domain: generalatlantic.com
Industry: Financial ServicesllmTechnologyllm

Discovered: May 31, 2023
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Third party: via Progress Software (MOVEit Transfer)
Initial access: exploit_public_facing

During the incident: Took the affected application offline
Activated our incident response procedures
Outside advisors and cybersecurity experts were retained to assist in the evaluation of the situation
Notified law enforcement
Changes made: Offering two years of complimentary credit monitoring and identity restoration services through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(114 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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2023/10/Delaware-Exhibit-A-and-B-09-22-23.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 22, 2023
Raw hash: a82b4ee8e83bce61eb162cafca728547ce97384490566a1842abda357cda14da

Reporting entitySovos Compliance, LLC

Victim entityAtlantic Shareholder Services

Incidentdiscovered May 31, 2023

Stated responseTook the affected application offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov