Disclosure context

About worldleaks

Based on the limited available data, worldleaks is a recently emerged ransomware group that was first observed in May 2025 and appears to be primarily financially motivated, having claimed 134 victims in a relatively short timeframe since its emergence. The group's origin and organizational structure remain unclear, with no publicly documented information from major cybersecurity firms or law enforcement agencies regarding their country of origin, potential affiliations, or operational model. Their targeting patterns indicate a focus on English-speaking countries, particularly the United States, United Kingdom, and Canada, with additional activity observed in Germany and Japan, while their sector targeting shows a preference for healthcare, technology, manufacturing, and consumer services organizations. Due to the group's recent emergence and limited public documentation by established threat intelligence sources, specific details about their attack methodologies, encryption techniques, extortion tactics, and notable campaigns have not yet been comprehensively analyzed or reported by organizations such as CISA, FBI, or major cybersecurity research firms. The group appears to remain active as of the most recent observations, though comprehensive threat intelligence profiling awaits further analysis and documentation by established cybersecurity authorities. The group has been linked to 155 public disclosures across our corpus. First observed on a leak site on May 18, 2025; most recent post May 12, 2026. The operation is currently active.

Timeline of this disclosure

March 31, 2026San Felipe Del Rio CISD School listed by worldleakson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 694 disclosures indexed across all operators we track. Geographically, San Felipe Del Rio CISD School is reported in US, a country with 2,713 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

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San Felipe Del Rio CISD School

Claimed by worldleaks · listed 2 months ago

50d

Age

since listed · data leaked

Status timeline

Listed
Mar 31, 2026
Data leaked

At a glance

Group: worldleaks
Status: Data leaked
Country: US
Sector: Education
Listed on leak site: Mar 31, 2026

About the victim

AI dossier — public-source company profile

San Felipe Del Rio CISD (SFDR-CISD) is a public school district located in Del Rio, Texas, serving students from kindergarten through 12th grade. The district operates multiple elementary, middle, and high schools, including magnet and alternative programs. It focuses on providing innovative curriculum and meeting individual student needs in partnership with families and the community.

Industry: K-12 Public School District
Address: Del Rio, Texas, USA

Attack summary

Severity: high — The 'data_published' status indicates data has been released publicly. A K-12 school district holds substantial volumes of regulated PII including minor student records (potentially subject to FERPA), staff personal data, and family information, making any confirmed data publication a high-severity event even absent explicit detail on data type or volume.

The worldleaks group has listed San Felipe Del Rio CISD with a 'data_published' status, claiming data has been disclosed. The leak post provides no specific details on whether encryption or exfiltration occurred, nor the nature or volume of data allegedly compromised.

high

Data the group says was taken

AI dossier — extracted from the leak post

Student records
Staff records
District administrative data
Family/parent contact information

Original description

AI-summarised, not from the leak post

San Felipe Del Rio CISD School is an educational institution located in Del Rio, Texas. It is a public school district that serves students from kindergarten through 12th grade. The district provides various academic programs and extracurricular activities, aiming to prepare its students for higher education and future careers.

Sources

Victim sitewww.sfdr-cisd.org
Leak posthttps://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/0300206018

Source

Indexed 2 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.