Was Lee & Sakahara Architects hit by ransomware?

Lee & Sakahara Architects was listed by the Killsecurity ransomware operation (United States), 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 Killsecurity ransomware group?

Killsecurity 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 Lee & Sakahara Architects breach?

Killsecurity published data attributed to Lee & Sakahara Architects. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Leesak Architects, Inc.

listed as Lee & Sakahara Architects · Claimed by Killsecurity · listed 1 year ago

15m

Age

since listed · data leaked

Status timeline

ListedMar 31, 2025
Data leakeddate unknown

At a glance

Group: Killsecurity
Status: Data leaked
Country: United States
Sector: Business Services
Listed on leak site: Mar 31, 2025

About the victim

AI dossier — public-source company profile

Leesak Architects, Inc. is an architectural design firm based in Las Vegas, Nevada, serving commercial, retail, industrial, and public sector clients. The firm has completed projects across multiple building types and maintains a professional services team.

Industry: Architecture & Design Services
Address: 6280 S. Valley View Blvd., Suite 116, Las Vegas, NV 89118

Attack summary

Severity: low — No leak post content available to assess proof of data exfiltration or operational impact. Listing alone without published evidence or stated harm.

The Killsecurity group claims to have attacked Leesak Architects. The leak post content is not provided ('N/A'), so specific details about whether data was exfiltrated, encrypted, or the nature of compromised information are unknown.

low

What the group claims

N/A

Sources

Victim siteleesak.com

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 Killsecurity

Killsecurity is a relatively new ransomware group that emerged in March 2024, operating with apparent financial motivations and demonstrating rapid expansion in their victim targeting. The group's origin and affiliations remain unclear due to limited public documentation from major threat intelligence sources, though their global targeting pattern suggests a sophisticated operation. Based on available victim data, Killsecurity has compromised 276 organizations primarily across the United States, India, United Kingdom, Brazil, and Belgium, with a particular focus on healthcare, technology, business services, and financial sectors. The group's attack methodology, encryption techniques, and specific tools remain undocumented in public threat intelligence reports from established security firms. Notable campaigns and high-profile victims have not been extensively documented by major cybersecurity organizations or law enforcement agencies, likely due to the group's recent emergence. Killsecurity appears to remain active as of current reporting, though comprehensive analysis of their operations is limited by the lack of detailed technical documentation from reputable threat intelligence sources. The group has been linked to 277 public disclosures across our corpus. First observed on a leak site on March 21, 2024; most recent post May 15, 2026. The operation is currently active.

Timeline of this disclosure

March 31, 2025Lee & Sakahara Architects listed by Killsecurityon the group's public leak site

Other recent disclosures by Killsecurity

Killsecurity has been linked to 277 public victims on Darkfield. A sample of the most recent:

See the full Killsecurity dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, Lee & Sakahara Architects is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Killsecurity means Lee & Sakahara Architects 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, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on Killsecurity'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.