This record tracks a ransomware attack claimed by the
akira group against
The Teaching Company, LLC. 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.
-52days
t1 · Published
t2 · Disclosed
Business Category
Finance / Legal / Insurance
Published
December 12, 2023
Disclosed / Notified
Oct 22, 2023
Attack Summary
The Teaching Company, doing business as The Great Courses, provides courses on digital versatile disc, audio compact disc, and other formats. 60Gb of data will be uploaded. Clients information, lots of accounting and finance data, courses info and even a holiday video! We will update soon.
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 thegreatcourses.com
— indexed by HaveIBeenRansom.
785
found in Infostealer logs
994+
found in Traditional breaches
217+
found in Ransomware leaks
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••• emails
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
Access Intelligence
play · ransomware
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Televerde
play · ransomware
••• emails
linkedIN_2.7z.001
Database World ROC · breach
••• emails
contacts_20.csv
Database World ROC · 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.