This record tracks a ransomware attack claimed by the
lynx group against
simmerscrane.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.
312days open
t1 · Published
t2 · Pending
Business Category
Manufacturing / Engineering
Published
October 24, 2025
Disclosed / Notified
Not disclosed yet
Attack Summary
Simmers Crane Design & Services Company was founded in 1958 by Charles Simmers, former Chief Engineer with Koppers Co. and Vice President of Engineering with Morgan Engineering Company. Mr. Simmers recognized the need for a specialty engineering group to serve the steel industry, and was able to staff his group with engineering personnel from major crane and mill builders. Initially providing engineering services only, Simmers became a Division of Pollock Research and Design, Inc. in 1966 and has expanded its' capabilities to include complete engineering services, field services, and materials for cranes, weight handling, mill, special, and category "A" nuclear equipment. Providing services both domestically and internationally, Simmers, along with its' sister division Reading Crane & Engineering Co., is an OEM supplier. Simmers is accredited by the U.S. Department of Labor to inspect, test, and certify Maritime shore based material handling devices such as cranes, derricks, spouts
Leak Screenshots
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Dark Web Exposure
Findings for simmerscrane.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
711+
found in Traditional breaches
148+
found in Ransomware leaks
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