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Ransomware disrupts Wayne County payments, records and jail services

Summary

Wayne County logo

A cyberattack disrupted Wayne County, Michigan, payments, property records and jail services on Oct. 2, 2024. A county official reported encrypted files. Later health-network records describe cyber-related jail billing reconstruction in March 2025. Interlock claimed the county, but its responsibility, theft allegations and the exact end remain unverified.

Key facts

Timeline

  • Incident start:
    ? Earliest known or assessed start of malicious activity or incident activity.
  • First public signal:
    ? Earliest public indication of an outage, disruption, closure or other observable incident impact. The signal does not need to mention cybersecurity.
  • First public cyber evidence:
    ? Earliest credible public information connecting the incident or disruption to malicious cyber activity.
  • Official cyber disclosure:
    ? First official acknowledgment by the affected organization or an authoritative public body that the incident was cyber-related.
  • Last impact seen:
    ? Latest public indication that disruption, degraded operations, recovery work or unresolved impact was still ongoing.

Primary victim organization

Critical infrastructure sector

Incident characteristics

Assessments

Attack mechanisms

  • Ransomware

    Malware that encrypts systems or data, typically accompanied by a ransom demand.

Data impacts

  • Data encryption

    Data was rendered inaccessible through unauthorized encryption, including ransomware-related encryption.

  • Data unavailable

    Authorized users could not access required data because of the incident, even when the data was not encrypted, deleted, or destroyed.

Operational impacts

  • Website unavailable

    A public-facing website was unavailable, disabled, or inaccessible.

  • Payment processing disruption

    The organization could not process, receive, issue, reconcile, or record payments normally.

  • Records access disruption

    Staff, customers, patients, students, residents, or other users could not access records or case information normally.

  • Records processing disruption

    The organization could not create, update, search, file, approve, transmit, or otherwise process records normally.

  • Scheduling disruption

    Appointment, booking, reservation, dispatch, staffing, or other scheduling functions were unavailable or impaired.

  • Public safety operations disrupted

    Police, fire, emergency medical, corrections, emergency management, or other public-safety operations were materially affected.

  • Government services disrupted

    Public administrative, licensing, permitting, court, tax, records, benefits, or other government services were materially affected.

  • Delayed opening or early closure

    The organization delayed opening, closed early, or reduced operating hours because of the incident.

  • Backlog created

    The disruption caused an accumulation of unprocessed requests, cases, orders, records, appointments, or other work.

  • Manual workaround required

    Staff or users had to rely on paper, telephone, in-person, offline, or other manual processes.

  • Alternate service channel required

    The organization redirected users to a different website, office, telephone number, email address, provider, or service channel.

  • Downstream organization impact

    The incident caused operational effects at customers, affiliates, subsidiaries, partners, tenants, or other dependent organizations.

Extortion indicators

  • Ransom demand

    The victim received a demand for payment in exchange for restoring access, decrypting systems, preventing disclosure, or stopping another threatened action.

  • Leak-site listing

    The victim was listed on a threat actor or ransomware data-leak site as an alleged target or nonpaying victim.

Incident narrative

Analyst assessment

Wayne County, Michigan, experienced a cyberattack on Oct. 2, 2024. Its spokesperson acknowledged a cyber incident affecting internal systems in WXYZ’s initial report, while an unnamed source described a financial demand. The initial intrusion time remains unknown.

The ransomware assessment has support beyond that anonymous account. In WXYZ’s Oct. 3 follow-up, County Commission Chair Alisha Bell said some internal files had been encrypted. Interlock later listed the county, but a listing does not independently establish who deployed the malware or substantiate every theft allegation.

Operational significance

Online tax payments were unavailable, although in-person payment continued. The Register of Deeds closed early, limiting real-estate recording and property-record access. WXYZ also reported disruption to jail bonding and attorney-client visit scheduling. County office websites were unavailable, while the prosecutor later said its office remained open and the Third Circuit Court initially reported normal business.

The effects varied by institution. The Record’s direct inquiries found Detroit city systems unaffected and the probate court functioning. The county used backup processes, and its commission held an in-person meeting when Zoom was unavailable. These findings establish impaired public services without supporting a shutdown of all local government or the entire court system.

A Dec. 18, 2024, county court filing describes lost access to jail databases and electronic court communications, requiring paper records and manual reconstruction for electronic-monitoring release processing. The county said most electronic systems were accessible by Oct. 15 and unusual cyber-related tether delays had ended by its December filing. This was a narrow recovery statement about tether processing, not an all-clear for every county service. A March 25, 2026, federal court opinion also describes the database interruption and paper tracking of court dates and orders. Its decision for the defendants in the over-detention lawsuit did not erase those operational effects; release delays also involved other causes.

The county commission’s June 5, 2025, journal records approval of an amendment raising the limit on a legal-services agreement for the October 2024 cyber incident from $35,000 to $250,000. This was an authorized contract maximum, with no evidence that the full amount had been spent. The agreement concerned legal advice and analysis; its term does not establish a continuing service outage.

Confidence and uncertainty

Confidence in the cyber incident and material disruption is high. Named county officials acknowledged the event and encryption, supporting high ransomware confidence. BleepingComputer’s November reporting identifies Wayne County among Interlock’s claimed victims; attribution remains low confidence, and the record does not establish the initial access method, verified exfiltration scope or a payment outcome.

WDIV’s Oct. 22 reporting presents a mixed recovery picture: the sheriff said computers were restored, while jail operations still faced recovery problems and staffing constraints. Restoration of computers does not prove that all service backlogs had cleared. Later records show additional recovery work. Detroit Wayne Integrated Health Network’s February 2025 committee packet describes a cyberattack on the jail management system during October–December 2024 and says some data may not have been captured. Its April 9, 2025, packet includes a March report stating that NaphCare could not bill jail bed-days after an attack affected the jail management and TechCare systems. Manual data entry remained underway, with a June 30 target for completing the work. That target is not proof of completion. A later report for May 2025, included in the July 9 committee packet, said all outstanding jail mental-health claims had been entered into the system. This provides a recovery milestone for that backlog, without establishing an exact completion day or recovery of every county service. These records do not establish a separate intrusion into NaphCare.

Analytic gaps

The timing of the first intrusion and the extent of affected systems remain uncertain. The earliest reviewed Oct. 2 report contains both external cyber characterization and a quoted county acknowledgment; their publication order cannot be separated. The available evidence does not resolve that disclosure sequence. The county’s own operational statements document service disruption.

Interlock tracker entries discovered in October 2024 and March 2025 contain similar allegations about the same county and domain. The later discovery is not evidence of a second attack. Original claim publication times, the extent of any stolen information and the point when all residual operational problems ended remain unresolved. The March 2025 report dates continuing data-entry work only to a month; the packet’s meeting date does not supply an exact date for that work. The incident remains presumed resolved, with no verified end date. Unrelated jail staffing and opening problems should not automatically be attributed to the cyberattack.

Threat actor and claim

Listed as: Wayne CountySource: ransomware.liveDiscovered:

Claim details

Ransomware.live indexes an Interlock listing for Wayne County using the verified historical waynecounty.com domain, discovered Oct. 23, 2024, at 17:34:23.027938 UTC. It alleges an offering of more than 130 SQL databases and criminal-investigation and resident information. The original post publication time is not supplied. A second tracker entry, labelled Wayne County, Michigan and discovered March 1, 2025, at 18:27:53.297632 UTC, uses the same domain and near-identical allegations; it is not evidence of a separate intrusion. BleepingComputer’s Nov. 3 original report independently identifies the county among Interlock’s listed victims. County officials separately acknowledged the cyber incident and encryption, but the reviewed evidence does not verify Interlock’s responsibility, the alleged stolen-data contents or a payment outcome. No raw purportedly stolen files were opened or downloaded. Preserve the stable listing separately from confirmed victim facts and do not assign group-general techniques to this event.

Organizations involved

Impacted locations

  • Vestavia Hills, Alabama

    Vestavia Hills contains the headquarters of NaphCare, the provider whose Wayne County jail billing was affected. The documented disruption concerned its Detroit jail work; a separate local outage or intrusion at the headquarters has not been established.

  • Detroit, Michigan

    Detroit contains affected county offices and jail operations, NaphCare’s jail health care work and the behavioral health authority’s administrative offices. The county commission met at the Guardian Building when Zoom was unavailable. Detroit city officials separately reported that city systems were unaffected.

  • Wayne County, Michigan

    Wayne County is the physical jurisdiction of the affected county government and the service territory of the separate public behavioral health authority involved in jail programs. This area relationship does not establish an outage at every address or compromise of the county’s municipal governments.

Sources

Ransomware Attack in Michigan Cripples Wayne County Government Services

We reported that the Wayne County cyberattack interrupted online tax payments, property-record services, jail bonding and attorney visits. County officials acknowledged an incident affecting internal systems.

Cyberattack hits Wayne County government; services affected as hacker demands ransom

Reports a cyber incident affecting Wayne County internal systems on Oct. 2, 2024. A county spokesperson acknowledged the incident, while an unnamed source described a financial demand. Online tax, property-record and jail services were affected; in-person tax payments remained available.

Detroit-area government services impacted by cyberattack

The county said affected services had moved to backup processes and forecast restoration of its website and online property services. Detroit city systems were unaffected, and the county probate court remained functional when contacted.

Wayne County services in disarray as officials continue to work through cyberattack

County Commission Chair Alisha Bell said internal files had been encrypted. The report describes continuing county-service disruption and an in-person commission meeting at the Guardian Building when Zoom was unavailable.

‘It is horrendous’: Inmates say system issues have them stuck at Wayne County Jail

The sheriff said computers had been restored, while the report described continuing jail-management and court-access problems after the cyberattack. Staffing shortages and other new-jail difficulties also contributed; computer restoration did not establish that all service backlogs were cleared.

Meet Interlock — The new ransomware targeting FreeBSD servers

Identifies Wayne County among victims listed by the Interlock ransomware group. The listing supports the existence of an attacker claim; it does not independently verify the group’s responsibility or the contents of allegedly stolen county data.

Wayne County corrected motion and supporting brief in West-Campeau v. Dunlap, ECF 13

County counsel described inaccessible jail databases, disrupted electronic court communications and manual tether-processing records. Access to most systems returned by Oct. 15, 2024. By its December filing, the county said unusual cyber-related tether delays had ended; it did not establish countywide recovery.

West-Campeau v. Dunlap, opinion and order, ECF 37

The opinion describes jail databases being inaccessible Oct. 2–15, 2024, and paper tracking of court dates and orders. It distinguishes other causes of release delays. The court granted the defendants’ motion in the damages case without treating the cyber disruption as nonexistent.

Program Compliance Committee meeting packet, Feb. 12, 2025

A report covering October–December 2024 describes the Wayne County jail’s transition to a new facility and a cyberattack on its jail management system. It says some data may not have been captured. It distinguishes these difficulties from staffing and other service constraints.

Program Compliance Committee meeting packet, April 9, 2025

A March 2025 report says a cyberattack affecting the jail management and TechCare systems prevented NaphCare from billing bed-days during the first quarter. Manual data entry was ongoing and could delay billing submissions. June 30 was a completion target, with no verified outcome stated.

Program Compliance Committee meeting packet, July 9, 2025

The jail mental-health section of a report for May 2025 says all outstanding claims had been entered into the system. It also describes NaphCare staff working with people in the jail. The report supplies no exact day of backlog completion or countywide recovery.

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