Disclosure context

About lockbit5

Based on the provided data, LockBit5 appears to be a recently emerged ransomware operation first observed in December 2025, representing what may be a new iteration or rebrand within the LockBit ransomware ecosystem, with primary financial motivations evidenced by their targeting of high-value sectors. Given the LockBit naming convention and the timing of emergence, this group likely operates from Eastern Europe or Russia and may represent either a continuation of previous LockBit operations or a new affiliate group leveraging the established LockBit brand, though specific organizational details remain undocumented by major security agencies. While detailed attack methodologies have not been publicly documented by CISA, FBI, or major security researchers, the group's targeting pattern across 157 victims suggests a broad-spectrum approach focusing on technology, manufacturing, healthcare, and transportation sectors primarily in the United States, Brazil, Germany, Italy, and Mexico. Due to the group's recent emergence in December 2025, there are no publicly documented notable campaigns or major incidents reported by established threat intelligence sources, though the victim count indicates active operations. The group appears to be currently active based on the recent first observation date, though comprehensive analysis from major security agencies has not yet been published given the short timeframe since emergence. The group has been linked to 252 public disclosures across our corpus. First observed on a leak site on December 7, 2025; most recent post May 12, 2026. The operation is currently active.

Timeline of this disclosure

May 12, 2026dentoncalvary.org listed by lockbit5on the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, dentoncalvary.org 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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dentoncalvary.org

Claimed by lockbit5 · listed 8 days ago

Age

since listed · data leaked

Status timeline

Listed
May 12, 2026
Data leaked

At a glance

Group: lockbit5
Status: Data leaked
Country: US
Sector: Healthcare
Listed on leak site: May 12, 2026

About the victim

AI dossier — public-source company profile

Denton Calvary Academy (DCA) is a K-12 University-Model® private Christian school located in Denton, Texas. The school serves students from Kindergarten through 12th grade across Elementary, Middle, and High School programs, partnering with parents in academic and faith-based development. It is a modest-sized institution with athletics, fine arts, and various student clubs and activities.

Industry: K-12 Private Christian Education
Address: Denton, TX, USA

Attack summary

Severity: critical — The victim is a K-12 school, meaning the exfiltrated data almost certainly includes minors' PII, immunization/health records, and family financial information — all regulated categories (FERPA, COPPA, HIPAA-adjacent health data). Data has been published, confirming exfiltration of sensitive data involving children.

LockBit 5 claims to have attacked Denton Calvary Academy and has published data (disclosed status: data_published), indicating exfiltration and likely encryption of school records and related data.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Student records
Parent/guardian information
Staff and employment records
Academic and enrollment data
Financial/tuition records
Immunization information
Contact information

What the group claims

Denton Calvary Academy is a K-12 University-Model school that focuses on fostering a love of learnin...

Sources

Source

Indexed 8 days 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.