This record tracks a ransomware attack claimed by the
lockbit3 group against
kasperekusaoptical.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.
-48days
t1 · Published
t2 · Disclosed
Business Category
Communication / Marketing
Published
October 17, 2023
Disclosed / Notified
Aug 31, 2023
Attack Summary
Kasperek Optical is a family-owned and operated wholesale optical distributor and manufacturer. Headquartered in Michigan, Kasperek Optical has been providing eyewear and accessories to independent eye care professionals since 1978. Kasperek Optical...
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 kasperekusaoptical.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
58
found in Traditional breaches
5
found in Ransomware leaks
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••• emails
Arandell Corp
medusa · ransomware
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
contacts_3.csv
Database World ROC · breach
••• emails
Televerde
play · ransomware
••• emails
contacts_79.csv
Database World ROC · breach
••• emails
+ 1 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.