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Safety and Security

Safety and Security

Main achievements in 2020

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CSR Priority Activities Medium-term Targets CSR Quantitative Indicators KPI Target Achievement FY Result (FY)
2017 2018 2019
Reinforce information security Suspension of telecommunications services due to cyber attacks from the outside*1 Number of service suspensions 0 2020 -- -- 0
Number of incidents of personal information leaks due to cyber attacks from the outside*1 Number of incidents of personal information leaks 0 2020 -- -- 1
Personal information protection Zero incidents of personal information leaks Number of incidents of personal information leaks 0 -- 2 1 1
Ensure stability and reliability of telecommunications services*4 Provide stable telecommunications services free of major communications problems Stable service provision rate*2 99.99% -- 100% 100% 100%
Number of major accidents*3 0 -- 0 0 0

*1Newly established in fiscal 2020

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

*3Number 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
・Other services: more than 2 hours affecting 30,000 users, or more than one hour affecting 1 million users

*4Targets of statistics: Four telecommunications business companies (NTT East, NTT West, NTT Communications, and NTT DOCOMO)

Safety and Security