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TUM Transportistas Unidos Mexicanos División Norte, S.A. de C.V.

listed as tum.com.mx · Claimed by Krybit · listed 3 days ago

3d
Age
since listed · data leaked

Status timeline

  1. ListedSep 1, 2026
  2. Data leakeddate unknown

At a glance

Group
Krybit
Status
Data leaked
Country
Mexico
Sector
Education
Listed on leak site
Sep 1, 2026

About the victim

AI dossier — public-source company profile

TUM is the largest trucking company in Mexico, founded in 1938, operating 18 terminals across Mexico and the United States. The company provides national land freight distribution, cross-border logistics, import/export services, and intermodal solutions, serving major multinational clients including Ford, Walmart, Dell, and Sony.

Industry
Freight & Logistics / Trucking
Address
Tlalnepantla, Estado de México, Mexico (corporate headquarters); Nuevo Laredo, Tamaulipas, Mexico (international headquarters)
Employees
1800+
Founded
1938

Attack summary

Severity: low — No proof files, screenshots, or data samples are advertised in the leak post. No explicit confirmation of data exfiltration or encryption is stated. The post contains only publicly available company information and operational details.

The group claims to have compromised TUM's systems. The leak post provides company background and operational details but does not explicitly state what data was exfiltrated, encrypted, or the nature of the attack conducted.

low

What the group claims

TUM Transportistas Unidos Mexicanos División Norte, S.A. de C.V. is the largest trucking company in Mexico, founded in ...

The leak post

captured from the group's site
TUM Transportistas Unidos Mexicanos División Norte, S.A. de C.V. is the largest trucking company in Mexico, founded in 1938, with corporate headquarters in Mexico City (Tlalnepantla, Estado de México) and international headquarters in Nuevo Laredo, Tamaulipas, directly across from the U.S.' busiest port of entry. TUM operates 18 terminals across Mexico and is a full-service freight and logistics provider offering: national land freight distribution; import and exportation with full door-to-door capabilities to the United States; intermodal solutions; bulletproof units; flatbed and refrigerated units; and cross-border logistics. In 2001, TUM opened its first U.S. terminal in Laredo, Texas (TUM Logistics — 3PL), and in 2011 launched TUM Logistics Carrier Division as a direct American carrier starting with 50 trucks and 150 trailers. TUM also co-founded TUM AeroCarga (air cargo airline, 2015–2025) under Grupo TUM MCS Holding. Major clients include Colgate, Dell, Sony, Adidas, Frito-Lay, Nestlé, L'Oréal, Sara Lee, Ford, Chrysler, Costco, Walmart, and Honda.
Corporate HQ: Tlalnepantla, Estado de México, Mexico
International HQ: Nuevo Laredo, Tamaulipas, Mexico
TEL (División Norte): (867…

Sources

Source

Indexed 3 days 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 krybit

Krybit is an emerging ransomware group that was first observed in April 2026, operating with apparent financial motivations based on their limited documented attacks against diverse sectors. The group's origin and affiliations remain unclear due to limited public intelligence, and it is unknown whether they operate as a Ransomware-as-a-Service model or as an independent entity. With only four known victims documented across geographically diverse regions including Mexico, Austria, Japan, and Botswana, the group appears to employ broad targeting rather than focused regional or sector-specific campaigns, though their attack methodology, encryption techniques, and data exfiltration practices have not been publicly documented by major security firms or law enforcement agencies. No notable high-profile campaigns or significant ransoms have been publicly reported, and no law enforcement actions against the group have been documented. Given the recent emergence of this group and extremely limited public reporting, Krybit's current operational status and capabilities remain largely unknown to the broader cybersecurity community. The group has been linked to 134 public disclosures across our corpus. First observed on a leak site on April 3, 2026; most recent post September 3, 2026. The operation is currently active.

Timeline of this disclosure

  • September 1, 2026tum.com.mx listed by krybiton the group's public leak site

Other recent disclosures by krybit

krybit has been linked to 134 public victims on Darkfield. A sample of the most recent:

See the full krybit dossier →

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 1,087 disclosures indexed across all operators we track. Geographically, tum.com.mx is reported in Mexico, a country with 71 ransomware disclosures in our corpus.

If your organisation is affected

A listing by krybit means tum.com.mx 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, CERT-MX (Mexico), as required for your jurisdiction.
  • Monitor for the data appearing on krybit'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.