World Leaks
World Leaks is a cybercriminal extortion group that emerged in early 2025 as a rebrand of the Hunters International ransomware operation, which had been active since 2023. Reporting in the provided content describes World Leaks as the successor to Hunters International and notes a strategic shift away from file encryption toward pure data theft and leak-based extortion, with the group stealing company data and threatening public release unless payment is made. Known aliases in the content are World Leaks, WorldLeaks, world_leaks, and Hunters International. The group has been linked in the content to incidents affecting organizations in manufacturing, healthcare, technology, consumer services, and energy, with many claimed victims in the United States as well as victims in Europe, Canada, India, and China. Specific victim claims or links mentioned in the content include Tata Electronics, Nike, Dell, Bradford Health Services/Bradford Health Partners, Fred Hutchinson Cancer Center, and other organizations listed on its leak site. For Tata Electronics, World Leaks claimed to have stolen and published more than 200,000 files totaling over 630 GB, and reporting cited alleged exposure of emails, event logs, employee passport copies, SAP-related records, and documents tied to Apple and Tesla. The content also states that World Leaks made ransom demands in connection with Tata Electronics and that researchers observed the data on the group’s Tor-accessible dark web site. In the Nike case, World Leaks claimed theft of 1.4 TB across 188,000 files. The content also notes that some prior claims, such as Dell, involved more limited data than initially implied. The provided reporting states that World Leaks focuses on data exfiltration and extortion rather than encrypting victim systems. One source in the content says the group commonly gains initial access through phishing, compromised credentials, or exploitation of exposed services, then performs data discovery and exfiltration, prioritizing confidential corporate or personal information. The content also notes Hunters International use of Rclone as a primary exfiltration tool with WinSCP as a fallback in some intrusions. World Leaks is described in the content as an active extortion actor in the broader ransomware ecosystem despite its move away from encryption, and one report identifies LockBit, World Leaks, and TheGentlemen as leading groups observed targeting organizations in China.
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Targeting
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Who they target
Sectors the actor has been observed targeting.
- Technology Hardware & Equipment
Where they target
Geographies tied to known operations.
- 🇮🇳 India
Tradecraft
42 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
Associated malware families
1 malware family attributed to this actor across reporting.
Associated vulnerabilities
2 CVEs this actor has used in observed campaigns. 2 of them exploited in the wild.
CVE-2017-17215 9.1 NETGEAR Routers (R6400, R7000, R8000) World Leaks, TheGentlemen, Devman Link
Other cases include Oracle WebLogic Server CVE-2025-21535, a missing authentication vulnerability tied to initial access in activity attributed to Hunters International...
Observables
15 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
Recent activity
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Ransomware gang active since 2023 that later rebranded into WorldLeaks and shifted from file encryption to pure data theft and extortion.
Claimed responsibility for the cyberattack against Bradford Health Services and Bradford Health Partners and stated that it exfiltrated more than 760 GB of data.
Extortion group that has claimed attacks against organizations across multiple sectors including manufacturing, healthcare, technology, consumer services, and energy.
Data theft and extortion operations, threatening to publicly release stolen information unless demands are met; allegedly claimed theft and publication of data from Tata Electronics and has been linked to incidents involving Dell and Nike.
The version that knows your environment.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.