This record tracks a ransomware attack claimed by the
akira group against
Stoss Landscape Urbanism. 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.
-56days
t1 · Published
t2 · Disclosed
Business Category
Communication / Marketing
Published
November 19, 2025
Disclosed / Notified
Sep 24, 2025
Attack Summary
Stoss Landscape Urbanism specializes in designing landscapes and
social spaces that promote resilience, vitality, and equity. Thei
r projects encompass a variety of sectors including downtown plaz
as, parks, waterfronts, campus institutions, and mixed-use reside
ntial areas.
We are ready to upload more than 76GB data. You will find employe
es and customers information (passports, Social Security Numbers,
emails, phones) confidential information, NDAs and other documen
ts with detailed personal information.
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 stoss.net
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
123+
found in Traditional breaches
5+
found in Ransomware leaks
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••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Arandell Corp
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••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 20 sources.
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.