Was IDS Group hit by ransomware?

IDS Group was listed by the Rhysida 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 Rhysida ransomware group?

Rhysida 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 IDS Group breach?

Rhysida published data attributed to IDS Group (~973 GB), around 174 files records. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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IDS Group

Claimed by Rhysida · listed 3 months ago

973 GB

Data size

174 files records

Age

since listed · data leaked

Status timeline

ListedMay 25, 2026
Data leakeddate unknown

At a glance

Group: Rhysida
Status: Data leaked
Country: United Kingdom
Listed on leak site: May 25, 2026
Data size: 973 GB
Records: 174 files

About the victim

AI dossier — public-source company profile

IDS Group is an award-winning multi-discipline design, engineering, and management consulting firm based in Southern California with over 50 years of operating history. The firm has delivered fully-integrated services for over 5,000 projects to hundreds of public and private sector clients worldwide.

Industry: Design, Engineering & Management Consulting
Address: Southern California
Founded: 1970

Attack summary

Severity: medium — Confirmed exfiltration claim with data published/offered for sale, but no specific data types, scale, or regulatory sensitivity disclosed. No operational disruption stated. Consulting firm likely holds client PII and commercial data of moderate sensitivity.

Rhysida claims to have exfiltrated data from IDS Group and is offering it for sale exclusively to a single buyer. The group advertises the data as 'exclusive, unique, and impressive' but provides no specific details on what data was compromised or operational impact.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Project files and designs
Client information
Engineering documentation
Business records

What the group claims

IDS Group IDS Group is an award-winning multi-discipline design, engineering, and management consulting firm based in Southern California. More

The leak post

captured from the group's site

IDS Group is an award-winning multi-discipline design, engineering, and management consulting firm based in Southern California.
With just 7 days on the clock, seize the opportunity to bid on exclusive, unique, and impressive data. Open your wallets and be ready to buy exclusive data. We sell only to one hand, no reselling, you will be the only owner!
With roots spanning over 50 years, the company has provided fully-integrated and industry-leading design, engineering, program / construction management and / or master planning services for over 5,000 projects, to hundreds of public and private sector clients worldwide.

Sources

Leak posthttp://rhysidafohrhyy2aszi7bm32tnjat5xri65fopcxkdfxhi4tidsg7cad.onion/archive.php?company=256

Source

Indexed 3 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 Rhysida

Rhysida is a ransomware group that emerged in June 2023, operating with primarily financial motivations through targeted attacks against critical infrastructure and public sector organizations. The group's origin and potential state affiliations remain unclear, though they operate independently rather than as a traditional Ransomware-as-a-Service model, with limited public documentation regarding connections to other cybercriminal organizations. Rhysida employs double extortion tactics, typically gaining initial access through compromised VPN credentials and exploiting vulnerable public-facing applications before deploying their ransomware payload and exfiltrating sensitive data prior to encryption. The group has demonstrated a particular focus on healthcare and educational institutions, with notable attacks documented by CISA and FBI advisories highlighting their targeting of hospitals and school districts across multiple countries, resulting in significant operational disruptions to critical services. As of late 2024, Rhysida remains an active threat with continued operations targeting organizations primarily in the United States, Canada, and other Western nations, maintaining their focus on high-value sectors where operational disruption can maximize ransom payment likelihood. The group has been linked to 287 public disclosures across our corpus. First observed on a leak site on June 5, 2023; most recent post August 15, 2026. The operation is currently active.

Timeline of this disclosure

May 25, 2026IDS Group listed by Rhysidaon the group's public leak site

Data size: 973 GB
Records: 174 files

Other recent disclosures by Rhysida

Rhysida has been linked to 287 public victims on Darkfield. A sample of the most recent:

See the full Rhysida dossier →

Sector and geography

Geographically, IDS Group is reported in United Kingdom, a country with 377 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Rhysida means IDS Group 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 Rhysida'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.