This record tracks a ransomware attack claimed by the
knight group against
cityofdefiance.com. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
-60days
t1 · Published
t2 · Disclosed
Business Category
Public Sector
Published
December 13, 2023
Disclosed / Notified
Oct 15, 2023
Attack Summary
cityofdefiance.com is the official website of the City of Defiance, Ohio, a US public sector government site serving residents with municipal information and online services. The site provides city updates, service pages, and utility and tax payment resources, including water, sewer, and garbage billing information. It also offers civic and administrative content such as services, commissions, and local announcements. The domain was listed as a ransomware victim associated with Knight.
Leak Screenshots
SAMPLE
Proof-of-breach screenshots the operator posted from the stolen data. Previews are
redacted and locked — the originals are available on HaveIBeenRansom.
Dark Web Exposure
Findings for cityofdefiance.com
— indexed by HaveIBeenRansom.
1
found in Infostealer logs
490+
found in Traditional breaches
116+
found in Ransomware leaks
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••• emails
+ 17 more leak sources locked
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Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.