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Optimum Design Associates

listed as Optimum Design · Claimed by Abyss · listed 4 months ago

795GB
Data size
$50
Ransom
demanded
3m
Age
since listed · data leaked

Status timeline

  1. ListedMar 28, 2026
  2. Data leakeddate unknown

At a glance

Group
Abyss
Status
Data leaked
Country
United Kingdom
Sector
Electronics/Engineering
Listed on leak site
Mar 28, 2026
Data size
795GB
Ransom demanded
$50

About the victim

AI dossier — public-source company profile

Optimum Design Associates (an Emerald Technologies Company) is a UK-based provider of PCB design services and electronic engineering. The company offers professional PCB layout, design, and related engineering services to clients across the electronics sector. It operates under the Emerald Technologies group umbrella.

Industry
PCB Design & Electronic Engineering Services

Attack summary

Severity: high — Data has been confirmed as published (disclosed status: data_published) with 795 GB of exfiltrated business data including likely proprietary engineering and design files; significant exfiltration at scale from an engineering firm.

The Abyss ransomware group claims to have exfiltrated 795 GB of uncompressed data from Optimum Design Associates and has published the data, providing download links on their leak site.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Company files (795 GB uncompressed)
  • Engineering/PCB design data (inferred from industry)
  • Business documents

What the group claims

PCB design services data, electronic engineering solutions, customer data including Amazon, Siemens, Northrop Grumman, Lockheed Martin

The leak post

captured from the group's site
```
let data = [
{
        'title' : 'thinlinetech.com',
        'short' : 'thinlinetech.com 29Gb uncompressed data',
        'full' : 'Thinline Technologies <br>' +
                 'Thinline Technologies offers reliable IT consulting and expert computer and network support services to businesses in the Baltimore metro area.<br> They specialize in network administration, technology planning, and help desk services, focusing on increasing productivity and profitability for small to mid-size businesses.<br>'+
            'password: 6oGfyIRISQmmI3Ge2kEeyu7hbzONONEFpkcnhC1S4Ygk4iSpw4RRxDXY1uk9xeyUXOmg7UOuZvGekRc9cs8E61LWKdI08uv0kUyC4V6YxaETtrhniAtKD9t7FQ2qTFYi<br>'+
            'Link â„–1 Filelist',
        'links' : [
            "http://zngbsq66uwem4qzyxpqb5rjo2xebnbwdku27nhmquryx6ljnbbedhiad.onion/thinline.lst.zip",
            "http://zngbsq66uwem4qzyxpqb5rjo2xebnbwdku27nhmquryx6ljnbbedhiad.onion/thinline.rar"
        ]
},
{
        'title' : 'sitoy.com',
        'short' : 'sitoy.com 1.7Tb uncompressed data',
        'full' : 'Sitoy Group <br>' +
                 'Founded in 1968, Sitoy Group is engaged in the design, research, development, manufacturing, sale, wholesaling, and re…

Data the group says was taken

  • engineering_data
  • customer_data
  • business_data

Screenshot of the leak post

Leak screenshot for Optimum Design

Sources

Source

Indexed 4 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 Abyss

Abyss is a relatively new ransomware group that emerged in March 2023, operating with primarily financial motivations and targeting organizations across multiple sectors with a focus on English-speaking countries. The group's origin and affiliations remain largely undocumented by major security agencies, though their targeting patterns suggest they operate independently rather than as a Ransomware-as-a-Service model. Their attack methodology and specific tools have not been extensively documented by major threat intelligence firms, though their victim profile of 87 organizations indicates they employ effective initial access techniques to compromise business services, technology, healthcare, and agriculture sectors. The group demonstrates a clear geographic preference for targets in the United States, United Kingdom, Canada, Switzerland, and Hong Kong, suggesting either language preferences or specific regional access capabilities. Due to the group's recent emergence and relatively limited public documentation from established security researchers, detailed information about notable campaigns, encryption methods, or law enforcement actions remains scarce. Abyss appears to remain active as of current reporting, though the lack of extensive public analysis by major threat intelligence organizations suggests they may operate at a smaller scale compared to more prominent ransomware families. The group has been linked to 103 public disclosures across our corpus. First observed on a leak site on March 21, 2023; most recent post June 7, 2026. The operation is currently active.

Timeline of this disclosure

  • March 28, 2026Optimum Design listed by Abysson the group's public leak site
Data size
795GB
Ransom demanded
$50

Other recent disclosures by Abyss

Abyss has been linked to 103 public victims on Darkfield. A sample of the most recent:

See the full Abyss dossier →

Sector and geography

This disclosure adds to ransomware activity in the Electronics/Engineering sector, which has 2 disclosures indexed across all operators we track. Geographically, Optimum Design is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Abyss means Optimum Design 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 Abyss'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.