Potomac Financial Services
hellcat listed this organization on its leak site on Apr 10, 2025.
- Listing date
- Apr 10, 2025
- Attack date
- Apr 7, 2025
Listing text
We have breached a U.S.-based financial services firm. 381GB of sensitive data has been secured. The name will be made public in a few hours. This is a warning.
About the group
hellcat posted its first listing on Oct 25, 2024 and has listed 20 organizations to date.
HellCat is a ransomware-as-a-service group that formed in Q4 2024 and quickly became notable for high-profile attacks against Schneider Electric, Telefónica, and Israel's Knesset, primarily gaining initial access via stolen Jira credentials harvested by infostealer malware, targeting critical infrastructure and government entities.
Learning center
What does this listing mean?
Ransomware groups move data out of the organization before encrypting systems and threaten to publish it if the ransom is not paid. This method is called double extortion.
The listing shows that the group claims to have targeted the organization. Whether the data was published is shown by the later status of the listing.
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.
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