Updated Monthly — May 2026
Ohio Cybersecurity
Breach Tracker
Confirmed data breaches, ransomware incidents, and critical CISA advisories affecting Ohio businesses, healthcare providers, local governments, and schools. Curated monthly by Securafy's security team.
Last updated: May 14, 2026 · Next update: June 2026
47
Confirmed Ohio breaches
tracked in 2025–2026
tracked in 2025–2026
$1.85M
Avg. ransomware
recovery cost (Ohio)
recovery cost (Ohio)
197
Avg. days before
breach detected
breach detected
0
Ransomware incidents
at Securafy clients
at Securafy clients
⚠️ May 2026 Active Alert: CISA issued an emergency directive regarding a critical vulnerability in widely-used Ohio business VPN software. Unpatched systems are actively being exploited. See full advisory →
Recent Ohio Incidents — 2026
| Date | Organization Type | Sector | Incident Type | Severity | Status |
|---|---|---|---|---|---|
| May 2026 | Northeast Ohio school district | Education | Ransomware — student records encrypted | Critical | Investigating |
| May 2026 | Columbus-area law firm | Legal | Business email compromise — wire fraud attempt | High | Contained |
| Apr 2026 | Midwest regional hospital network | Healthcare | PHI exposure — misconfigured cloud storage | Critical | Reported to OCR |
| Apr 2026 | Ohio county government | Government | Ransomware — court records system | Critical | Recovery ongoing |
| Apr 2026 | Cleveland-area dental practice group | Healthcare | Credential theft — patient portal breach | High | Notification sent |
| Mar 2026 | Ohio defense manufacturer | Manufacturing | Supply chain compromise — vendor portal | Critical | Under investigation |
| Mar 2026 | Columbus community bank | Financial | Phishing campaign — employee credentials | High | Contained |
| Mar 2026 | Akron-area veterinary group | SMB | Ransomware — practice management system | High | Restored from backup |
| Feb 2026 | Ohio university medical center | Healthcare | Ransomware — 48-hour EHR outage | Critical | Restored |
| Feb 2026 | Statewide accounting firm | Financial | Tax data breach — client SSNs exposed | Critical | SEC & state notified |
| Jan 2026 | Northeast Ohio police department | Government | CJIS data exposure — unauthorized access | Critical | FBI involved |
| Jan 2026 | Ohio manufacturing consortium | Manufacturing | Ransomware — 3-week production halt | Critical | $2.3M recovery cost |
Active CISA Advisories — Ohio Relevant
May 2026 · Emergency Directive
Critical VPN Vulnerability — Actively Exploited
CISA issued an emergency directive for a critical vulnerability in widely-deployed business VPN software. Ohio businesses using unpatched versions are at immediate risk of unauthorized network access. Patch immediately or isolate affected systems.
Apr 2026 · High Severity
Healthcare Sector Targeted — Ransomware Campaign
FBI and CISA issued a joint advisory warning of an active ransomware campaign specifically targeting Midwest healthcare organizations. Recommended actions include MFA enforcement, network segmentation review, and offline backup verification.
Apr 2026 · High Severity
Business Email Compromise — Law Firms & Professional Services
IC3 advisory documenting a surge in BEC attacks against Ohio law firms and accounting practices. Attackers are impersonating managing partners to redirect wire transfers. Recommended: out-of-band verification for any payment request over $5,000.
Mar 2026 · Medium Severity
CMMC Compliance Deadline — Defense Contractors
DoD reiterated CMMC Level 2 compliance requirements for defense contractors in the supply chain. Ohio manufacturers with DoD contracts who have not completed their assessment are at risk of contract disqualification.
2025 Summary — Ohio Breach Statistics
In 2025, Securafy tracked 35 confirmed cybersecurity incidents affecting Ohio organizations. Key findings:
- Healthcare accounted for 38% of all Ohio incidents
- Ransomware was the attack vector in 61% of cases
- Average time from initial access to ransomware deployment: 17 days
- Organizations with managed detection had 4× faster containment than those without
- Phishing was the initial access method in 74% of cases
- MFA was not enforced at the time of breach in 89% of affected organizations
Methodology: This tracker compiles information from CISA advisories, HHS Office for Civil Rights breach portal, Ohio AG notifications, FBI IC3 reports, and public disclosures. Organization names are omitted or generalized where notifications are still in progress to protect ongoing investigations. Data is updated monthly. Sources available on request: security@securafy.com
Is Your Business on Next Month's List?
A free 47-point security assessment shows exactly where your exposure is — before an attacker finds it first.