This Impressum (Legal Notice & Corporate Disclosure) applies to the website sudo.vn (including sudo.vn/en) and all official digital channels operated by Sudo. It is published in compliance with mandatory statutory disclosure obligations across the DACH region and the European Union, specifically:

  • Switzerland: Article 3(1)(s) of the Swiss Federal Act Against Unfair Competition (UWG / LCD);
  • Germany: Section 5 of the German Digital Services Act (§ 5 DDG, formerly § 5 TMG) and Section 18 of the Interstate Media Treaty (§ 18 MStV);
  • Austria & European Union: Section 5 of the Austrian E-Commerce Act (§ 5 ECG) and Article 5 of the EU E-Commerce Directive (2000/31/EC).

1. Swiss & European legal entity (DACH contracting & representative office)

Commercial operations, client consulting, project governance, and data protection representation in Switzerland, Germany, Austria (DACH), and the European Economic Area (EEA) are conducted through our registered Swiss limited liability company:

  • Registered Company Name (Firma): Phung Beauty & Tech GmbH (Operating the Sudo Software Engineering Division & BukkiGo Platform in Switzerland & Europe)
  • Legal Form (Rechtsform): Limited Liability Company under Swiss Law (Gesellschaft mit beschränkter Haftung — GmbH, pursuant to Art. 772 et seq. of the Swiss Code of Obligations / OR)
  • Registered Office (Sitz & Domiziladresse): Dorfstrasse 14, 8956 Killwangen, Canton of Aargau, Switzerland
  • Swiss Business Identification Number (UID / MWST): CHE-474.361.935
  • Commercial Register Number (Handelsregister-Nr. / CH-ID): CH-400.4.454.727-4
  • Commercial Register Office (Handelsregisteramt): Handelsregisteramt des Kantons Aargau (Commercial Register of the Canton of Aargau, Switzerland)
  • Date of Incorporation: 15 April 2024 | Registered Share Capital (Stammkapital): CHF 20,000 (fully paid-in)
  • Switzerland & WhatsApp Direct Line: +41 77 530 43 73 (Mon – Fri: 08:00 – 16:00 CET)
  • Electronic Contact & Legal Inquiries: info@sudo.vn

2. Global headquarters & software R&D centers (platform operator)

Core software architecture, full-stack engineering, quality assurance (QA), and 24/7 DevOps infrastructure operations are executed by our global software headquarters and in-house R&D centers:

  • Registered Company Name: Sudo Software & E-Commerce Co., Ltd. (Công ty TNHH Phần mềm và Thương mại Điện tử Sudo)
  • Company Registration & Tax ID (MSDN): 0107082414 (Issued by the Hanoi Department of Planning and Investment on 04 November 2015)
  • Dun & Bradstreet D-U-N-S® Number: 55-678-2017
  • Authorized Legal Representative & CEO (Vertretungsberechtigter Geschäftsführer): Mr. Nguyen Cao Tu (Tu Cao) — Chief Executive Officer & Founder
  • Executive Operations Office: 3rd Floor - Dolphin Plaza (Tower 3-4), 6 Nguyen Hoang St., Tu Liem, Hanoi, Vietnam
  • Registered Statutory Address: 19 Co Van, Viet Hung, Dong Anh, Hanoi, Vietnam
  • Vinh Software R&D Center: 14th Floor - Nghe An Petro Tower (Tower A), 7 Quang Trung St., Vinh, Nghe An, Vietnam
  • 24/7 Global & Technical Hotline: +84 989 022 022
  • Official Email: info@sudo.vn | Technical Support Portal: support.sudo.vn

3. Editorial & content responsibility (Verantwortlich für den Inhalt nach § 18 Abs. 2 MStV)

Person responsible for editorial, technical, and journalistic content published on sudo.vn:

  • Name: Nguyen Cao Tu (Chief Executive Officer)
  • Address: 3rd Floor - Dolphin Plaza (Tower 3-4), 6 Nguyen Hoang St., Tu Liem, Hanoi, Vietnam & c/o Phung Beauty & Tech GmbH, Dorfstrasse 14, 8956 Killwangen, Aargau, Switzerland
  • Email: info@sudo.vn

4. Data protection & supervisory authorities

For detailed information on how we process personal data in compliance with the Swiss Federal Act on Data Protection (FADP / revDSG) and the EU General Data Protection Regulation (GDPR), please refer to our Privacy Policy and Cookie Policy & GDPR Notice.

  • Competent Supervisory Authority in Switzerland: Federal Data Protection and Information Commissioner (FDPIC / EDÖB) — Feldeggweg 1, CH-3003 Bern, Switzerland (www.edoeb.admin.ch).
  • Data Protection Inquiries: info@sudo.vn

5. Dispute resolution (EU Online Dispute Resolution & VSBG)

Sudo’s software engineering, cloud infrastructure, and consulting services are directed primarily at commercial enterprises, corporate entities, and public institutions (B2B). We are neither obligated nor willing to participate in consumer dispute resolution proceedings before a consumer arbitration board (pursuant to the German Consumer Dispute Resolution Act — VSBG). All commercial contractual relations are governed by the substantive laws of the Swiss Confederation with exclusive jurisdiction in the Canton of Aargau, Switzerland, as detailed in our Terms of Service & Master Service Agreement (MSA).

6. Liability for content, external links & copyright (Haftungsausschluss & Urheberrecht)

  • Liability for Content: The contents of our pages have been engineered and reviewed with the utmost care. However, we cannot guarantee the absolute accuracy, completeness, or topicality of all general informational articles. As a service provider, we are responsible for our own content on these pages in accordance with general statutory laws.
  • Liability for External Links: Our website contains links to external third-party websites over whose content we have no control. Therefore, we cannot assume any liability for these external contents. The respective provider or operator of the linked pages is always responsible for their own content.
  • Copyright & Intellectual Property: All software architectures, source code snippets, UI/UX graphics, case study documentation, and texts created by Sudo on these pages are protected by Swiss and international copyright law. Any duplication, processing, distribution, or commercial utilization beyond the limits of copyright law requires the prior written consent of Sudo.

Last updated: 24 October 2026