Fortune 500 company NTT discloses security breach

NTT Group
Image: Ryo Yoshitake, NTT Ltd.

Nippon Telegraph & Telephone (NTT), the 64th biggest company in the world, according to the Fortune 500 list, has disclosed today a security breach.

NTT says hackers gained access to its internal network and stole information on 621 customers from its communications subsidiary, NTT Communications, the largest telecommunications company in Japan, and one of the biggest worldwide.

The hack took place on May 7, and NTT says it became of the intrusion four days later, on May 11.

The company says hackers breached several layers of its IT infrastructure and reached an internal Active Directory (AD in the graph below) to steal and upload data to a remote server.

ntt-graph.png

ntt-graph.png

NTT intrusion, green text added by ZDNet

Image: NTT

The attack is believed to have originated from an NTT base in Singapore, the company said today.

Attackers used this entry point to reach a cloud server located in Japan (Server B), then move to a server on NTT Communication’s internal network (Server A), and then access the AD server.

NTT says it took down the hacked systems as soon as it learned of the incident.

The company is still investigating the breach, which it made public today, but says it plans to notify all customers “when it becomes clear what should be notified.”

NTT said it’s also in the process of upgrading its IT infrastructure.

The company is the latest Japanese company to disclose a security breach in the last few months. Mitsubishi Electric and NEC have also disclosed similar intrusions in January, and Pasco and Kobe Steel in February.

About the author

E-Crypto News was developed to assist all cryptocurrency investors in developing profitable cryptocurrency portfolios through the provision of timely and much-needed information. Investments in cryptocurrency require a level of detail, sensitivity, and accuracy that isn’t required in any other market and as such, we’ve developed our databases to help fill in information gaps.

Related Posts

E-Crypto News Executive Interviews

Cryptopunkad1
Cryptopunkad2
Cryptopunkad1
Cryptopunkad1
Cryptopunkad1
Cryptopunkad1
previous arrow
next arrow

Automated trading with HaasBot Crypto Trading Bots

Blockchain/Cryptocurrency Questions and Answers

Crypto Regulation Index
Crypto Regulation Index for 2022
October 3, 2022
What Is ZetaChain And How Does It Operate?
What Is ZetaChain And How Does It Operate?
September 27, 2022
LUNC
What is Terra Classic (LUNC)? How Does it Work?
September 26, 2022
What Is A Public Presale In Crypto?
What Is A Public Presale In Crypto?
September 22, 2022
Cryptocurrency
How Many Cryptocurrencies and NFT Collections are there in 2022?
September 21, 2022


CryptoCurrencyUSDChange 1hChange 24hChange 7d

bitcoin
Bitcoin (BTC) $ 19,535.80
ethereum
Ethereum (ETH) $ 1,321.76
tether
Tether (USDT) $ 1.00
usd-coin
USD Coin (USDC) $ 1.00
bnb
BNB (BNB) $ 286.85
xrp
XRP (XRP) $ 0.455303
binance-usd
Binance USD (BUSD) $ 1.00
cardano
Cardano (ADA) $ 0.426739
solana
Solana (SOL) $ 32.93
dogecoin
Dogecoin (DOGE) $ 0.060097