Was Adaptavist Group LTD hit by ransomware?

Adaptavist Group LTD was listed by the thegentlemen ransomware operation (United Kingdom), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the thegentlemen ransomware group?

thegentlemen is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Adaptavist Group LTD breach?

thegentlemen published data attributed to Adaptavist Group LTD. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Adaptavist Group LTD

Claimed by Thegentlemen · listed 2 months ago

Age

since listed · data leaked

Status timeline

ListedApr 8, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: United Kingdom
Sector: Technology
Listed on leak site: Apr 8, 2026

About the victim

AI dossier — public-source company profile

Adaptavist Group LTD is a British enterprise software company and platinum Atlassian partner, known for developing ScriptRunner for Jira, Confluence, and Bitbucket. The company serves Fortune 500 clients including NASA, Visa, and Deutsche Bank, as well as government organisations. It also operates Salable, a licensing platform, and provides software development and consulting services at scale.

Industry: Enterprise Software & Atlassian Ecosystem Solutions
Address: London, United Kingdom
Employees: 501-1000
Founded: 2005

Attack summary

Severity: critical — Confirmed exfiltration includes nearly 500,000 customer PII records constituting a GDPR-scale breach, highly sensitive IP (full product source code), production secrets and credentials enabling further compromise, and legal/contractual documents; the scale, regulatory exposure, and downstream risk to Fortune 500 and government clients all meet the critical threshold.

The threat actor claims a complete infrastructure compromise involving exfiltration of source code, 484,220 customer records from HubSpot CRM, legal documents including NDAs, 3TB+ from Nexus repositories containing production secrets and credentials, and production databases; the licensing system is also alleged to have been compromised enabling product cloning.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Source code (ScriptRunner, Salable platform)
484,220 HubSpot CRM customer records
20,000+ legal tickets with 33,000 documents
2,000 NDAs and contracts
3TB+ Nexus repository data (production secrets, Docker images, Helm charts)
Kubernetes credentials
OAuth credentials
Snowflake Data Warehouse data
Confluence documentation (24,547 pages, 100+ GB)
Production databases
Licensing system access

What the group claims

Adaptavist Group LTD is a British platinum Atlassian partner and enterprise software developer serving Fortune 500 clients including NASA, Visa, Deutsche Bank, and government organizations. The company's flagship product is ScriptRunner for Atlassian Jira, Confluence, and Bitbucket. Complete infrastructure compromise: source code of all products (ScriptRunner, Salable licensing platform), 484,220 customer records from HubSpot CRM (GDPR violation), 20,000+ legal tickets with 33,000 documents including 2,000 NDAs and contracts, 3TB+ from Nexus repositories (production secrets, Docker images, Helm charts), Kubernetes, OAuth credentials, Snowflake Data Warehouse, Confluence (24,547 pages, 100+GB documentation), production databases. Licensing system compromised enabling product cloning.

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.

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Disclosure context

About thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 483 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post June 11, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

April 8, 2026Adaptavist Group LTD listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 483 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,526 disclosures indexed across all operators we track. Geographically, Adaptavist Group LTD is reported in United Kingdom, a country with 309 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Adaptavist Group LTD appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Monitor for the data appearing on thegentlemen's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.