A group of professional hackers was behind the biggest-ever cyber attack in Vietnam last month, which shut down many websites run by the Vietnam Communications Corporation (VCCorp), police said.
Lieutenant-Colonel Le Xuan Minh, head of the Hi-Tech Crimes Division of the Ministry of Public Security, told the press that investigators are still working with VCCorp and cybersecurity authorities to break down the attack.
On October 13, a number of websites run by VCCorp - a Hanoi tech firm that owns and hosts online games, e-commerce services and many news websites in Vietnam - were shut down.
VCCorp's representatives initially said the outage was just a data center glitch.
Two days later, the websites came back online. But the following day, they went down again.
On October 17, VCCorp told the press the outage was the result of an act of “sabotage” directed at the company.
On the afternoon of October 18, VCCorp’s news websites and some of its e-commerce sites came back online. But a number of small projects and social networking sites stayed down.
It wasn't until Wednesday (November 5) that VCCorp announced that all its websites had fully recovered.
Nguyen The Tan, VCCorp’s deputy general-director, said the group of hackers may have spent around US$500,000 on the attack.
The firm estimated the damages to the company were between VND20 and VND30 billion. (roughly US$94,000-$140,000)
Tan said that the hackers may have surveilled the company for around six months before launching the professional malware attack on its data center.