Tiendaleon: climax ransomware group claims attack on leak site

What happened

According to the tracker RansomLook, the climax ransomware group claims Tiendaleon on its leak site. The headline is dated 2026-11-09 RansomLook. A leak-site listing is the group’s own claim, not proof of an attack.

Only the headline could be retrieved. The full article could not be reviewed, so this advisory goes no further than that headline.

Not confirmed:

• Whether Tiendaleon has confirmed an incident. No source reviewed says it has.
• Whether any data was stolen or systems were encrypted.
• The volume or type of data involved.
• The entry point or method of intrusion.
• Any independent verification of the claim. No outlet other than a claim tracker carries the story.

Am I affected?

Not confirmed. The headline does not say what data or systems, if any, are involved. If you have a relationship with Tiendaleon, the only reliable way to know is a statement from the company itself. Nothing in the source points to a software vulnerability, a CVE or a patch.

What to do now

1. Check Tiendaleon’s official channels for a statement or notice about an incident.
2. If you have an account with Tiendaleon, watch for official communications, and treat unexpected emails or messages that refer to the claim with caution.
3. Revisit this advisory if Tiendaleon or an independent outlet confirms or denies the claim.

Sources

• RansomLook: Tiendaleon: claimed by the climax ransomware group on its leak site