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

April 26, 2026bardehle.com listed by lockbit5on the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, bardehle.com is reported in DE, a country with 333 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

← All victims

BARDEHLE PAGENBERG

listed as bardehle.com · Claimed by lockbit5 · listed 25 days ago

24d

Age

since listed · data leaked

Status timeline

Listed
Apr 26, 2026
Data leaked

At a glance

Group: lockbit5
Status: Data leaked
Country: DE
Sector: Business Services
Listed on leak site: Apr 26, 2026

About the victim

AI dossier — public-source company profile

BARDEHLE PAGENBERG is a leading European intellectual property law firm headquartered in Munich, Germany, with additional offices in Düsseldorf, Hamburg, Paris, Barcelona, and Singapore. The firm specialises in patent litigation, patent prosecution, trademarks, designs, copyright, and related IP legal services across a wide range of technical industries. It has operated for more than 45 years and is consistently ranked among the top-tier IP firms in Germany and Europe by Chambers Global, The Legal 500, and JUVE Patent.

Industry: Intellectual Property Law
Address: Prinzregentenplatz 7, 81675 Munich, Germany
Employees: 51-200
Founded: 1978

Attack summary

Severity: critical — An IP law firm holds highly sensitive, privileged attorney-client communications, confidential client business strategies, patent prosecution files, and personal data at scale. Confirmed data publication by a ransomware group represents exfiltration of regulated and commercially sensitive data affecting potentially hundreds of corporate clients across multiple jurisdictions.

LockBit 5 claims to have attacked BARDEHLE PAGENBERG and has published data ('data_published' status), indicating exfiltration of firm data; no ransom amount or precise data volume was disclosed in the post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Client legal files and case documents
Intellectual property filings and prosecution records
Attorney-client correspondence
Employee personal data
Internal business and financial records

What the group claims

BARDEHLE PAGENBERG is a leading intellectual property law firm in Europe, specializing in patent lit...

Sources

Victim sitebardehle.com
Leak posthttp://lockbitapt67g6rwzjbcxnww5efpg4qok6vpfeth7wx3okj52ks4wtad.onion/post/6af067af1a852b63a94cba574c937cdb

Source

Indexed 25 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.