Hacker threatens to leak a rumor huge cache of stolen telephónica -data
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- A threat actor claims to have stolen 106 GB sensitive files from Telefónica
- Telefónica says the files were old, stolen from an earlier incident
- A monster was shared with the media, with the entire batch to be followed soon
A cyber criminal threatens to release more than 100 GB of sensitive data that have been stolen from the Spanish telecommunications giant Telefónica.
In January 2025 the company suffered a data breach in the hand of the Hellcat ransomware Service. At the time, the group broke into the Telco via an internal Jira development and ticket server.
Among the members of the group is a threat actor at the alias Rey, who said that while Telefónica encouraged one mistake, creating another, giving them 12 hours of uninterrupted data -sex filtration. During that time, of which Rey claims it was at the end of May 2025, they are said to have stolen 106 GB sensitive files, where they have more than 380,000 files from internal communication, purchasing orders, logs, customer data and various employee data.
Old incident, or a new one?
The hacker has released a small example of 2.6 GB and threatens to release the whole thing unless a payment is made.
But Telefónica trivializes the incident. Spend against Bleeping computerAn employee of Telefónica O2 said the data is old and that there was no new infringement.
To prove the authenticity of the data, Rey shared an example with piping computer, including a file tree.
“Some files include invoices for business customers in several countries, including Hungary, Germany, Spain, Chile and Peru,” said the publication.
“In the files we received, there were e -mail addresses for employees in Spain, Germany, Peru, Argentina and Chile, and invoices for business partners or customers in European countries.”
Although the data is in the sample of 2021 and older, the publication stated that some of the e -mails that saw it were “active employees”.
“Because Telefonica has denied a recent infringement of 106 GB with data from the internal infrastructure, I free 5 GB here as proof. I will soon publish the full file tree and in the coming weeks, if Telefonica do not suffice, the entire archive will be released.;)” – Rey said.
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