The personal information of nearly 8 million (7.93m) people is feared to have been leaked by Japan’s biggest travel agency group, JTB Corp.
Among the leaked details are customer names, addresses, email addresses and passport numbers, some 4,300 of which are still valid, JTB said at a press conference in Tokyo.
According to The Japan Times, the agency said the information was stolen after a targeted email attack on subsidiary i.JTB Corp left its server with a virus.
JTB said there had so far been no data abuses following the theft.
“I apologize for causing trouble and worry to our customers and other people concerned,” JTB President Hiroyuki Takahashi told media.
Customers who used the online travel booking services of mobile phone carrier NTT Docomo Inc may have also had their data leaked, The Times reported.
Benefitting from a spike in foreign travellers to Japan, JTB, which has a workforce of some 26,000, last year posted a group net profit of ¥12.58 billion (AU$160 million).
JTB isn’t the first large Japanese corporation to have succumbed to cyber theft, with Yahoo Japan Corp. and Mitsubishi UFJ Financial Group Inc. also experiencing recent data leaks.
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