HDE One Cloud Security Solution

All-in-one Security Solution for Office 365

HDE One is a cloud service designed to strengthen the security protection for users of cloud-based Microsoft Office 365. It prevents unauthorized access to cloud services (Access Control); reduce the risk of information leakage due to devices theft or loss (Device Security); and prevent email data breaches (Messaging Security). It owns over 74% of marketshare in Japan.


KDDI Hong Kong is the only distributor of HDE One cloud service in Hong Kong*. For further details, you may refer to our introduction page.


If you require premium sales and technical support, you may contact KDDI salesperson by calling (852) 29195218 or sending email to websales@kddi.com.hk for inquiries.

Service Scope


  • Connection with Microsoft Office 365
  • Enablement of subscribed HDE One features

Technical Support

  • Office hour helpdesk support
  • Remote and phone support including coordination among ISP, Microsoft and HDE

* As of September 2016

HDE One Cloud Security Solution Essentials Email Security Full Set
Access Control Access Control  
Single Sign-On  
Secure Browser Solution for Smart Devices Loss  

Email Data

Leakage Prevention

Undo Send Email
Email Approval  
Content Compliance Filtering  
Auto Password ZIP Attachment  
Email Archiving  
Online Storage (2GB)  

* For the details of service's terms, please click here.

To enjoy your service by web purchase

When the order is confirmed, you will receive a confirmation email shortly.

KDDI representative will contact you within 3 business days for system enablement.