The head of a Hanoi-based IT company is suspected to have hacked into a local school's system earlier this month to send false messages to students' parents to show up the system installed by a competitor.
Major Le Ngoc Tri of the Hanoi police's hi-tech crime division Friday said they have questioned Nguyen Cam Tu, director of the Vietnam Software and Communication Information Company, about the attack on Ha Dinh Elementary School's system.
Tu, 30, allegedly told interrogators that he wanted to "lower the prestige" of his competitor and then approach the school for a contract to install software.
He accessed the school's system first from his home on September 4 and then from an Internet shop the next day.
He sent text messages to 713 parents' phone numbers available in the system saying students would have a day off on September 6 because the school had unexpected business, police said.
Hundreds of students failed to turn up at school that day.
Tri said Tu was released after questioning and the investigation is continuing.
Thanh Nien found that a software company, also based in Hanoi, had installed the system for Ha Dinh and a few other schools in the city.
A source from the company said the hacker had "easily" attacked the system because its password was simple.
Other schools in the capital like Ngoi Sao and Brendon elementary schools have also reported attacks since.
The city Department of Education and Training has urged schools to improve the security of their information systems.
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