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Lendco

Claimed by Killsec · listed 1 year ago

15m
Age
since listed · data leaked

Status timeline

  1. ListedApr 1, 2025
  2. Data leakeddate unknown

At a glance

Group
Killsec
Status
Data leaked
Country
United Kingdom
Sector
Financial Services
Listed on leak site
Apr 1, 2025

About the victim

AI dossier — public-source company profile

Lendco is a UK-based specialist lender founded in 2018, providing Buy-to-Let mortgages and bridging finance to property investors through intermediaries. The firm operates with a team of 55 experienced underwriters and has originated over £2 billion in lending, with access to major global bank funding and public market securitisations.

Industry
Specialist Lending & Mortgages
Address
33 Gracechurch Street, London, EC3V 0BT, United Kingdom
Employees
55
Founded
2018

Attack summary

Severity: high — Lendco processes sensitive financial data including loan applications, customer credit information, and transaction details from property investors. Confirmed data publication by ransomware operator in the financial services sector constitutes a significant breach, even without full details of data scope.

The killsec group claims to have attacked Lendco and published data. The specific nature of the exfiltration (data types, volume) and operational impact are not detailed in the available leak post excerpt.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Loan applications and underwriting records
  • Customer financial information
  • Broker intermediary details
  • Lending criteria and internal processes

What the group claims

N/A

Sources

Source

Indexed 1 year 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 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 281 public disclosures across our corpus. First observed on a leak site on March 21, 2024; most recent post June 3, 2026. The operation is currently active.

Timeline of this disclosure

  • April 1, 2025Lendco listed by killsecon the group's public leak site

Other recent disclosures by killsec

killsec has been linked to 281 public victims on Darkfield. A sample of the most recent:

See the full killsec dossier →

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 1,184 disclosures indexed across all operators we track. Geographically, Lendco is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.

If your organisation is affected

A listing by killsec means Lendco 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.
  • Report the incident to your national CERT, NCSC (United Kingdom), as required for your jurisdiction.
  • Monitor for the data appearing on killsec'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.