Was Tesco Engineer hit by ransomware?

Tesco Engineer was listed by the Deadlock 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 Deadlock ransomware group?

Deadlock 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 Tesco Engineer breach?

Deadlock published data attributed to Tesco Engineer (~27 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Tesco Engineer Co., Ltd.

listed as Tesco Engineer · Claimed by Deadlock · listed 2 months ago

27 GB

Data size

50d

Age

since listed · data leaked

Status timeline

ListedJul 27, 2026
Data leakeddate unknown

At a glance

Group: Deadlock
Status: Data leaked
Country: United Kingdom
Sector: Retail & E-Commerce
Listed on leak site: Jul 27, 2026
Data size: 27 GB

About the victim

AI dossier — public-source company profile

Tesco Engineer Co., Ltd. is a Thai construction and manufacturing company based in Bangkok, established in 1976. They specialize in civil engineering and industrial pipe manufacturing, with services including artificial lift installation at oil and gas facilities.

Industry: Civil Engineering & Industrial Pipe Manufacturing
Address: 130-132 Sindhorn Tower 2, 14th Floor, Wireless Road, Lumpini Subdistrict, Pathum Wan District, Bangkok 10330, Thailand
Founded: 1976

Attack summary

Severity: low — No proof files, screenshots, or data samples are advertised. No operational impact is stated. The disclosure consists only of a listing announcement with no evidence of exfiltration or encryption.

Deadlock group claims to have compromised Tesco Engineer Co., Ltd. The leak post provides no detail on whether data was exfiltrated, encrypted, or both, nor what specific data categories are at stake.

low

What the group claims

Tesco Engineer Co., Ltd. is a Thai construction and manufacturing company based in Bangkok, operating in civil engineering and industrial pipe manufacturing since 1976.

The leak post

captured from the group's site

Publishes after: <b>19d 22h 40m</b>
GTS legally registered as Global Terminal Hizmetleri A.Ş. It is the largest independent storage terminal for liquid fuels and oil in the entire Mediterranean region. 
LT Group / Fortune Tobacco Corp
Amount: 27 GB | Files: 14,836
They ignored our messages for 72 hours.. Now we publish the details of the breach. Data leaked: 107 Passports (MRZ) 1,712 Bank Statements (PNB + Holco USD accounts) 212 Promissory Notes (Eton Properties, PHP 2.53B debt) 231 BIR/eFPS credentials Samples: Passport_Johnny_Tan.pdf Holco_USD_Statement.pdf Eton_Debt_212.pdf Full leak: August 18. Contact: Session ID provided in emails. Pay for the data or pay for its permanent deletion. Otherwise, the full dump will be public. 
Publishes after: <b>11d 12h 51m</b>
United Fiber Optic Communication Inc. (UFOC) is an established, publicly traded telecommunications company from Taiwan. The company acts as a total solution provider for communication networks and specializes in the manufacture of fiber optic cables and the provision of integrated technological systems. 
Ahenk Laboratuvarı is an ISO 15189-accredited medical laboratory in Turkey, founded in 1998 and located in Istanbul-Ş…

Sources

Victim sitetesco-engineers.com

Source

Indexed 2 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About Deadlock

Deadlock is a ransomware group first observed in June 2026 with an apparent financial motivation, having claimed responsibility for attacks against at least 10 known victims across a geographically diverse target set. Given the recency of their emergence and limited public documentation by major threat intelligence organizations such as CISA, FBI, or Mandiant at this time, a comprehensive technical profile cannot be fully established. Based on available victimology data, the group has demonstrated a targeting pattern spanning Singapore, China, Sweden, Spain, and Nigeria, suggesting an opportunistic or globally distributed operational scope rather than a regionally focused campaign. Targeted sectors include manufacturing, business services, telecommunications, and financial services, indicating a preference for industries with high operational dependencies and potential for significant disruption, which is consistent with financially motivated ransomware actors seeking maximum leverage for ransom payment. No confirmed attribution regarding country of origin, RaaS affiliation, or specific tooling has been publicly documented by authoritative sources as of this profile's preparation. Due to the group's nascent operational timeline and the limited volume of publicly verified intelligence, analysts should treat this profile as preliminary and subject to significant revision as additional technical indicators, victim disclosures, and research reporting become available. Continued monitoring is advised given the cross-sector and cross-regional targeting behavior observed in this early operational phase. The group has been linked to 118 public disclosures across our corpus. First observed on a leak site on June 15, 2026; most recent post September 14, 2026. The operation is currently active.

Timeline of this disclosure

July 27, 2026Tesco Engineer listed by Deadlock on the group's public leak site

Data size: 27 GB

Other recent disclosures by Deadlock

Deadlock has been linked to 118 public victims on Darkfield. A sample of the most recent:

See the full Deadlock dossier →

Sector and geography

This disclosure adds to ransomware activity in the Retail & E-Commerce sector, which has 21 disclosures indexed across all operators we track. Geographically, Tesco Engineer is reported in United Kingdom, a country with 377 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Deadlock means Tesco Engineer 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 Deadlock'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.