Google is investigating its mid-December sophisticated cyber attacks in China which the company suspects is an insides job.

The attacks which were primarily targeted to people in Google who have access to specific parts ,had resulted in theft of the search giants sensitive intellectual property.Untill the last reports ,it is being assumed that one or more Google employees may have been involved in the Google breach which also targeted 20 other companies from Google networks.The attack used a malicious software (malware)  was a modification of a trojan called Hydraq , that, once inside a computer, allows someone unauthorised access.

McAfee , a leading antivirus vendor wrote in a corporate blog on Sunday that the targeted and coordinated nature of the attacks on various companies made them the most sophisticated cyberattack the company had seen in years.

"We're not commenting on rumour and speculation. This is an ongoing investigation, and we simply cannot comment on the details," a Google spokeswoman said.

Chinese media, citing unnamed sources, reported that some Google China employees were denied access to internal networks after Jan. 13, while some staff were put on leave and others transferred to different offices in Google's Asia Pacific operations. Google said it would not comment on its business operations.