This record tracks a ransomware attack claimed by the
rhysida group against
Mount St. Mary's Seminary. 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.
-80days
t1 · Published
t2 · Disclosed
Business Category
Communication / Marketing
Published
November 06, 2023
Disclosed / Notified
Aug 19, 2023
Attack Summary
Mount St. Mary's Seminary Mount St. Mary's Seminary is the oldest division of the Athenaeum. The seminary has as its mission the preparation of candidates for the Catholic priesthood�a gift of God and the fruit of an integrated approach to formation.
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 athenaeum.edu
— indexed by HaveIBeenRansom.
46
found in Infostealer logs
261+
found in Traditional breaches
67+
found in Ransomware leaks
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Marcus & Millichap, Inc.
shinyhunters · breach
••• 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.