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Ensure Reliable Communications

Protecting Personal Information

CSR Priority
Activities

Why this is a CSR Priority Activity for the NTT Group

The NTT Group has been entrusted with a considerable quantity of personal information, ranging from data on individual customers to that of corporate customers. Over the past few years, extensive leaks of personal information have occurred in Japan and overseas, driving up demand for more customer protection. The regulatory impact of protecting personal information has also grown, as seen in the European Unionís personal information protection rules, requiring an even greater degree of information management.
Under these circumstances, the occurrence of a personal information leak could have various repercussions for the NTT Group in the operations of its businesses, including damage to its corporate value and loss of customers, which makes the rigorous management of personal information essential.

Number of incidents of personal information leaks

Management Approach

The NTT Group has established a policy and rules on information concerning its customers, shareholders, employees and others under the NTT Group Information Security Policy. We exercise rigorous management of information security by appointing a chief information security officer (CISO), who is ultimately responsible for our security management system.
In addition, each Group company has established a personal information protection system commensurate with their business. They have also formulated respective policies to conduct initiatives such as setting up organizational structures for information security management and installing systems for handling security issues.

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Reinforcing Information Security

CSR Priority
Activities

Why this is a CSR Priority Activity for the NTT Group

The importance of information security grows each year as people seek to ensure the safety of Internet transactions and prevent leaks of confidential information. As an operator of telecommunications infrastructure, the NTT Group is charged with the responsibility of combating the ever more sophisticated and increasing threats to information security in order to protect customersí precious information assets.
The NTT Group has positioned Global Cloud Services as the cornerstone of its business operations in the Medium-Term Management Strategy, and we realize the need to provide an additional degree of security in managing customersí information assets through networks.
It is no less important to prepare against sophisticated large-scale cyber attacks on major international events and other venues, and the NTT Group is expected to demonstrate its true value in this area.

Number of security experts

Management Approach

With the risk of cyber attacks emerging as a serious problem, we are focusing on training security experts as the key to reinforcing security as well as organizing and pursuing educational programs throughout the Group.
We are contributing to provide safe and secure services by developing technologies and services that ensure information security and by setting up NTT-CERT to implement preventive and follow-up support on security incidents as part of a multi-layered defense from the perspectives of equipment, operations and response required to combat cyber attacks.

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Ensuring Stable and Reliable
Communications Services

CSR Priority
Activities

Why this is a CSR Priority Activity for the NTT Group

Securing critical communications and the 110, 119 and 118 emergency call services for rescue and restoration operations during a disaster and for maintaining public order may prove crucial in saving lives. Japan is a country prone to natural disasters such as earthquakes and typhoons. As such, telecommunications networks are especially important, a fact that was reaffirmed by the devastating Great East Japan Earthquake.
Faced with the possible occurrence of a major earthquake directly under Tokyo or the Nankai Trough off Japanís southern coastline, there is a pressing need for society to prepare for such potential disasters while ensuring the stability and reliability of its telecommunications infrastructure.

Service stability Number of serious accidents

Management Approach

The NTT Group has defined three key themes for disaster countermeasures: improving communications network reliability, securing critical communications, and prompt restoration of communications services. We have been strengthening efforts based on these themes since the Great East Japan Earthquake.
Specifically, we are taking measures to improve the reliability of our telecommunications infrastructure. To ensure that our communications services operate without interruption at all times, we employ transmission trunk line multi-routing, have enacted blackout countermeasures for communications buildings and base stations, and are making communications buildings more quake-proof. In addition, we are expanding the assortment of power supply vehicles and other disaster response equipment that we have positioned throughout Japan, and are repeatedly conducting trainings to prepare for major natural disasters. We are making a daily effort to guarantee that, in the event of a disaster, we are able to immediately set up a Disaster Countermeasures Office and other emergency structures and make the necessary emergency and critical communications as designated public institutions prescribed in the Basic Act on Disaster Control Measures.
In fiscal 2016, no major accidents*1 occurred at the four telecommunications businesses (NTT East, NTT WEST, NTT Communications and NTT DOCOMO), and service stability*2 was 100%.

*1 Number of accidents that led to a suspension of telecommunications services or a decline in communications quality that meet the following criteria regarding duration and number of people affected:

  • Emergency call services (110, 119, etc.): at least 1 hour affecting at least 30,000 users
  • Voice services other than emergency calls: at least 2 hours affecting at least 30,000 users, or at least 1 hour affecting at least 100,000 users
  • Internet-related services (free of charge): at least 12 hours affecting at least 1 million users, or at least 24 hours affecting at least 100,000 users

*2 [1 Ė total hours under the impact of major accidents (number of affected users A~ hours of major accidents) / total hours of major service provision (number of users A~ 24 hours A~ 365 days)] A~ 100%

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Improving communications network reliability

  • For the most recent data (as of June 2017) click hereiconPDFWin

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