Interlock
Since Oct 13, 2024, Interlock has listed 154 organizations on its leak site.
Listings per month
- Total listings
- 154
- First listing
- Oct 13, 2024
- Latest listing
- Oct 21, 2026
- MITRE ATT&CK techniques
- 0
Interlock is a ransomware group first observed in September 2024 that targets critical infrastructure sectors including healthcare, government, education, and technology across North America and Europe using double-extortion, with 57+ claimed victims including a major US dialysis provider exposing over two million patient records.
It posted 75 listings in the last 12 months; the busiest month was October 2026 (23 listings).
Most targeted country: United States, with 118 listings (77% of the total).
Most targeted sector: Education, with 35 listings (23% of the total).
Targeted countries
Showing 10 of 154 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.
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