DisclosureLens
AccidentalGovernmentGovernmentMisconfigurationCustomer Data InvolvedIdentity (basic)Government IDMediumContained

City of Sheffield, Iowa

bd_4f70663882ef8781 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 15, 2026

Filed

May 11, 2026

To disclose

17 weeks

Affected

808state residents only

Confidence

67%
Full breach record for City of Sheffield, Iowa →

The City of Iowa City notified the Iowa Attorney General of a data event affecting 808 Iowa residents. On January 15, 2026, the City discovered a cloud data store was publicly accessible on the internet. The exposed data included names, Social Security numbers, and driver's license numbers. The City reconfigured the store, launched an investigation, and provided 12 months of credit monitoring via Kroll to affected residents.

Iowa clock✓ IA AG ≤5 bday17 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

discovery → filing · 17 weeks / 116 days

Jan 15, 2026

Discovered

May 11, 2026

Filed

vs. sector median

+6 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed808 affectedView incident

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.