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Ransomware groupBlueWhale
Since Aug 14, 2026, BlueWhale has listed 2 organizations on its leak site.
Listings per month
- Total listings
- 2
- First listing
- Aug 14, 2026
- Latest listing
- Aug 14, 2026
- MITRE ATT&CK techniques
- 0
BlueWhale is classified as ransomware group.
It posted 2 listings in the last 12 months; the busiest month was August 2026 (2 listings).
Most targeted sector: Technology, with 2 listings (100% of the total).
Targeted countries
Targeted sectors
Showing 2 of 2 results
What does a ransomware group do?
Ransomware groups break into corporate networks, move data out and encrypt systems. If the ransom is not paid, they list the organization on a leak site and threaten to publish the data.
What should you do if your organization is listed on a leak site?
- Record the listing and any published sample files; do not visit the leak site from the corporate network.
- Isolate affected systems and preserve logs without deleting them.
- Determine which data left the organization; if personal data is involved, review notification obligations with your legal team.
- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
Is your organization mentioned?
Search with your domain to check whether your organization appears in ransomware listings, leaked records, forums and Telegram channels.
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Intelligence 360
Customer intelligence on top of Infostealer Detection: leaked accounts of end users who sign in to your site.