DisclosureLens
HackingGovernmentGovernmentCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDHigh

City of Philadelphia

bd_fd232d7509ce9f11 · schema v1 · pii pii-v1

Severity

High

Discovered

May 18, 2021

Filed

Jun 11, 2021

To disclose

24 days

Affected · nationwide

49,2554 in this filing

Linked

2 filings

Confidence

65%
Full breach record for City of Philadelphia9 incidents on file

The City of Philadelphia reported a data breach affecting 49,255 individuals. The incident, which occurred on March 11, 2020, and was discovered on May 18, 2021, was described as an external system breach (hacking). The compromised information included names and Social Security Numbers. Affected individuals were notified on June 11, 2021, and offered 12 months of credit monitoring and identity restoration services from Kroll.

Maine clockDiscovered May 18, 2021Filed with AG Jun 11, 202124d ME AG ≤30d24 days discovery → filing
AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 433 days
discovery → filing · 24 days

Mar 11, 2020

Begins

May 18, 2021

Discovered

Jun 11, 2021

Filed

vs. sector median

7 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Filing propagation · 2 filings · 2 states

View merged incident ↗
Montana State AGApr 14 · first
Maine State AG+58d · this page

Pattern: first filing Apr 14 (MT), last Jun 11 (ME) — a 58-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.