Sensitive Japanese power plant information has been leaked onto the internet via an employee-installed share-filing program, for the second time in four months.
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Security information about a plant run by the Chubu Electric Power Company was spread by the Share file-sharing program, installed by a 40-year-old employee.
The file-sharing program is said to have distributed documents to other internet file sharers regarding the plant's security arrangements, the names and addresses of its security personnel, and other confidential information.
The company has blamed an unnamed virus on the employee’s machine for spreading the information.
Only four months ago, the power company suffered a similar problem when sensitive information was leaked via the Winny file-sharing program.
At the time the company said it would prohibit the installation of file-sharing software on employees' computers. It has not been disclosed whether the latest culprit has been sacked.
Graham Cluley, senior technology consultant for security software company Sophos, said, “There have been a series of viruses written specifically to leak information from infected PCs onto Japanese file-sharing networks, causing embarrassing headlines for the companies concerned.
“Questions will surely be asked as to whether sufficient steps were taken to curb the problem at Chubu Electric,” he said.
In June 2005, it was reported that nuclear power plant secrets had been leaked from a computer belonging to an employee of Mitsubishi Electric Plant Engineering.