Social EngineeringGovernmentGovernmentPhishingStolen CredentialsMulti-Stage ChainCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDMediumActive

City of Philadelphia

bd_605337eb10a938bd · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 31, 2020

Filed

Jun 15, 2021

To disclose

15 months

Affected

3state residents only

Linked

3 filings

Confidence

66%

Full breach record for City of Philadelphia →7 incidents on file

Supplemental notice from City of Philadelphia to NH AG regarding phishing incident affecting ~3 NH residents. Unauthorized access to employee email accounts occurred March 2020–Jan 2021. Data included names, SSNs, driver's licenses. City reset passwords, enhanced security, and offered Kroll monitoring.

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Incident timeline

undetected · 20 days

discovery → filing · 15 months / 441 days

Mar 11, 2020

Begins

Mar 31, 2020

Discovered

Jun 15, 2021

Filed

This filing is one of 3 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Maine State AGbd_610571ffe4c5020b2021-08-06 · +52dVerified
New Hampshire State AGbd_a694e4af814e7d2a2021-08-13 · +59dVerified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: City of Philadelphia
norm: city of philadelphia
Industry: Governmentllm

Discovered: Mar 31, 2020
Breach occurred: Mar 11, 2020 – Jan 14, 2021
Undetected for: 20 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 11, 2021
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General
Initial access: phishing_link

During the incident: Launched an internal investigation
Resetting impacted employees’ email account passwords
Increasing monitoring of network activity
Implementing tools to enhance email security
Provided 12 months of complimentary access to identity monitoring services through Kroll
Changes made: Updated our policies and procedures to protect against similar incidents
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 months(441 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 2 states

View merged incident ↗

New Hampshire State AGJun 15 · first · this page

Maine State AG+52d

New Hampshire State AG+59d

Pattern: first filing Jun 15 (NH), last Aug 13 (NH) — a 59-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://mm.nh.gov/files/uploads/doj/remote-docs/philadelphia-20210615.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 15, 2021
Raw hash: 89bdf6910939cd0d479f19d5f48e51f62b0b3bce1c89a5f096f61c797879a8c9

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityCity of Philadelphia

Incidentdiscovered Mar 31, 2020

Stated responseLaunched an internal investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov