This record tracks a ransomware attack claimed by the
killsec group against
extramarks.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.
-82days
t1 · Published
t2 · Disclosed
Business Category
Education
Published
October 10, 2024
Disclosed / Notified
Jul 21, 2024
Attack Summary
Discover a new era of education with Extramarks. Our innovative digital solutions empower schools, teachers, students, and parents to revolutionize the way they teach and learn.
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 extramarks.com
— indexed by HaveIBeenRansom.
8,082
found in Infostealer logs
1,352+
found in Traditional breaches
0+
found in Ransomware leaks
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Paytm_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
IndiaMART_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
TruecallerIndia_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Exploit.in.rar
LKnet reserve chat · 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.