Boxun.com hit by cyber attacks after Bo Xilai reporting

US-based website Boxun.com, which is covering the political scandal surrounding China's Bo Xilai, has become the latest victim of cyber attacks. Its site was brought down for several hours on Friday.

There is speculation over who may have been behind the attack with some pointing the finger at China. But China has also complained that it is coming under increasing attack from hackers.

So who is responsible for these attacks? Asia Business Report's Rico Hizon put that question to Pierre-Marc Bureau, security intelligence program manager at IT security firm ESET.