HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDFinancial accountMediumContained

Automatic Data Processing, Inc.

bd_f858bde2a2668138 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 10, 2020

Filed

Feb 20, 2020

To disclose

10 days

Affected

74state residents only

Linked

5 filings

Confidence

66%

Full breach record for Automatic Data Processing, Inc. →7 incidents on file

ADP notified South Carolina residents that between Jan 24 and Feb 11, 2020, an unauthorized user accessed self-service accounts using valid credentials to view tax info (name, address, wages, SSN). ADP discovered the incident on Feb 10, 2020, reported it to the IRS, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 17 days

discovery → filing · 10 days

Jan 24, 2020

Begins

Feb 10, 2020

Discovered

Feb 20, 2020

Filed

vs. sector median

16 wks faster

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

New Hampshire State AGbd_507576f884070fb12020-02-21 · +1dVerified
Montana State AGbd_0b42389df0393bfa2020-02-19 · +1dCandidate
Massachusetts State AGbd_e7c4f084936463942020-02-19 · +1dVerified
Indiana State AGbd_88d532d4c7eba3642020-02-18 · +2dVerified

Name: Automatic Data Processing, Inc.
norm: automatic data processing
Domain: adp.com

Name: Automatic Data Processing, Inc.
norm: automatic data processing
Domain: adp.com
Industry: Professional Servicesllm

Discovered: Feb 10, 2020
Breach occurred: Jan 24, 2020 – Feb 11, 2020
Undetected for: 17 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 74state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Reported the incident to the Internal Revenue Service (IRS)
Initial access: valid_credentials

During the incident: Offering complimentary Experian IdentityWorks membership
Reported the incident to the Internal Revenue Service (IRS)
Changes made: Taking steps to protect individuals
Updating security controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 10 days(10 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGFeb 18 · first

Montana State AG+1d

Massachusetts State AG+1d

South Carolina State AG+2d · this page

New Hampshire State AG+3d

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://consumer.sc.gov/sites/consumer/files/Documents/Business%20Resources%20Laws/Related%20Laws/Breaches/2020/ADP.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 20, 2020
Raw hash: f76ad3aaabd85f1c68067ec07904db53279c0d7017832e7aea2cb70d5cb87651

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityAutomatic Data Processing, Inc.

Victim entityAutomatic Data Processing, Inc.

Incidentdiscovered Feb 10, 2020

Stated responseOffering complimentary Experian IdentityWorks membership

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceconsumer.sc.gov