Ransomware Group: KILLSEC

VICTIM NAME: KillSec 4[.]0

NOTE: No files or stolen information are [exfiltrated/downloaded/taken/hosted/seen/reposted/disclosed] by RedPacket Security. Any legal issues relating to the content of the files should be directed at the attackers directly, not RedPacket Security. This blog is simply posting an editorial news post informing that a company has fallen victim to a ransomware attack. RedPacket Security is in no way affiliated or aligned with any ransomware threat actors or groups and will not host infringing content. The information on this page is fully automated and redacted whilst being scraped directly from the KILLSEC Onion Dark Web Tor Blog page.

AI Generated Summary of the Ransomware Leak Page

KillSec 4.0 is identified as the victim on the leak page, which was published on October 4, 2025 at 19:48:24 (UTC as posted). The page presents the incident as a data-leak event associated with a ransomware operation, consistent with double-extortion activity. The attackers claim to have exfiltrated sensitive data from the victim’s environment and threaten public disclosure if their demands are not met. A notable claim on the page is that more than 300 GB of documents were downloaded, with messaging that a financial settlement would be required to secure deletion of the data and prevent disclosure. The post also features a short motto from the attackers and references the possibility of contacting the victim’s clients about the leak as part of their extortion narrative, underscoring the leak’s public-facing pressure tactic.

The leak page includes visual content: five images are associated with the post. The imagery is described in general terms (e.g., decorative icons and a screenshot) rather than presenting any raw data, and no direct image or document contents are disclosed within this summary. The presence of these images aligns with common leak-page tactics that accompany textual claims, serving to bolster credibility or compel engagement without exposing specific files within the summary itself.

An update embedded on the page notes a discrepancy in the messaging: the attackers state that the assertion of compromised data is unsubstantiated and claim the operation targeted internal systems beyond what is publicly accessible. This nuance indicates evolving or conflicting claims about the scope of the breach. The messaging also includes references to data samples and distribution via file-sharing services, and reiterates a demand for a financial settlement to delete the data and prevent its disclosure. Taken together, the page presents KillSec 4.0 as a ransomware leak with a data-leak and extortion narrative, a sizeable claimed data footprint, and a contested view of the incident’s reach.