Disclosure context

About killsec

killsec is a relatively new ransomware group that emerged in March 2024, operating with apparent financial motivations and demonstrating broad targeting across multiple geographic regions and industry sectors. The group's origin and potential state affiliations remain unclear due to limited public documentation from major threat intelligence sources, though their targeting pattern suggests opportunistic rather than geopolitically motivated operations. With 276 documented victims primarily concentrated in the United States, India, the United Kingdom, Brazil, and Belgium, killsec appears to focus heavily on healthcare, technology, business services, and financial sectors, indicating either specific tooling designed for these environments or opportunistic targeting of organizations with valuable data and high pressure to restore operations quickly. Given the group's recent emergence and the lack of detailed technical analysis from established cybersecurity firms like Mandiant or law enforcement advisories from CISA or FBI, specific details about their attack methodology, initial access vectors, encryption techniques, and extortion tactics have not been publicly documented in authoritative sources. The group remains active as of current reporting, though the limited intelligence profile suggests they may be either a smaller operation or one that has not yet attracted significant attention from major threat intelligence organizations despite their substantial victim count. The group has been linked to 279 public disclosures across our corpus. First observed on a leak site on March 21, 2024; most recent post May 14, 2026. The operation is currently active.

Timeline of this disclosure

December 9, 2025playroll listed by killsecon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, playroll is reported in United Kingdom, a country with 902 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

playroll

Claimed by killsec · listed 5 months ago

Age

since listed · data leaked

Status timeline

Listed
Dec 9, 2025
Data leaked

At a glance

Group: killsec
Status: Data leaked
Country: United Kingdom
Sector: Not Found
Listed on leak site: Dec 9, 2025

About the victim

AI dossier — public-source company profile

Playroll is a global HR, payroll, and compliance platform headquartered in the United Kingdom. It offers Employer of Record services, contractor management, global payroll processing across 35+ regions, immigration support in 95+ countries, and related workforce solutions. The platform serves startups, small businesses, and enterprises seeking compliant international hiring and talent mobility.

Industry: Global HR, Payroll & Employer of Record Services
Employees: 51-200

Attack summary

Severity: critical — Playroll processes global payroll and HR data across 35+ regions for international employers and their employees, meaning the compromised data almost certainly includes large-scale PII, financial payroll records, tax data, and immigration documents — all categories of regulated sensitive data warranting a critical classification.

KillSec claims to have compromised Playroll and has published or is preparing to publish data, with the leak post indicating a disclosed status of data_published and a single disclosure event (0/1). No ransom amount or specific data volume has been stated.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Employee payroll records
HR and workforce data
Employer and contractor personal information
Compliance and legal documentation
Multi-country payroll processing data
Immigration and visa records

The group's post references roughly 1 proof file.

What the group claims

Price ??? Disclosures 0/1

Sources

Victim siteplayroll.com

Source

Indexed 5 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.