HackingHealthcareHealthcarePhishingStolen CredentialsCustomer Data InvolvedIdentity (basic)Financial accountLowContained

Apellis Pharmaceuticals, Inc.

bd_1280d192e6ba9d09 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 28, 2024

Filed

Sep 27, 2024

To disclose

4 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

66%

Full breach record for Apellis Pharmaceuticals, Inc. →

Apellis Pharmaceuticals, Inc. notified Vermont AG that an unauthorized actor accessed an employee email account from Aug 26-27, 2024, discovered Aug 28. Exposed data included names, addresses, and financial account/routing numbers. Apellis contained the incident, reset credentials, and provided 12 months of Kroll identity monitoring.

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Vermont clock⏱ VT AG >14 bday4 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 2 days

discovery → filing · 4 weeks / 30 days

Aug 26, 2024

Begins

Aug 28, 2024

Discovered

Sep 27, 2024

Filed

vs. sector median

8 wks faster

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Indiana State AGbd_914bc4add331a8c92024-09-27Verified
Massachusetts State AGbd_5d26afb2c7aa56a22024-09-30 · +3dVerified
Maine State AGbd_a1121296145378bc2024-09-30 · +3dCandidate
New Hampshire State AGbd_3510931627ac97592024-10-04 · +7dVerified

Show 1 more filing ↓up to 40d gap

New Hampshire State AGbd_a540d1f2efb8cc552024-11-06 · +40dVerified

Name: Apellis Pharmaceuticals, Inc.
norm: apellis pharmaceuticals

Name: Apellis Pharmaceuticals, Inc.
norm: apellis pharmaceuticals
Industry: Healthcarellm

Discovered: Aug 28, 2024
Breach occurred: Aug 26, 2024 – Aug 27, 2024
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 27, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)Financial account
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Reviewing accounts and files that could have been accessed
Conducting malware scans
Remediating malicious content
Resetting impacted accounts
Conducted enhanced awareness outreach to all employees regarding security best practices
Arranged to make available to you twelve (12) months of identity monitoring provided by Kroll at no charge
Changes made: Conducted enhanced awareness outreach to all employees regarding security best practices
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: VT AG >14 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

Indiana State AGSep 27 · first

Vermont State AGSep 27 · first · this page

Massachusetts State AG+3d

Maine State AG+3d

New Hampshire State AG+7d

New Hampshire State AG+40d

Pattern: first filing Sep 27 (IN), last Nov 6 (NH) — a 40-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://ago.vermont.gov/document/2024-09-27-apellis-pharmaceuticals-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 27, 2024
Raw hash: 2d6f682c26b8cf5c1cf56622e2d9b0792373d7c336d81876673733ded3fb22f2

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityApellis Pharmaceuticals, Inc.

Victim entityApellis Pharmaceuticals, Inc.

Incidentdiscovered Aug 28, 2024

Stated responseReviewing accounts and files that could have been accessed

ComplianceVT AG >14 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov