YouTube has disabled 210 channels after you have discovered that they acted "in a coordinated manner by posting videos related to the events underway in hong Kong" said Thursday, Shane Huntley, analyst-in-charge of security within the Google group, which owns the video platform.

"We have found the use of VPN (virtual network enabling to conceal the geographical origin of actual internet connection) and other methods to hide the origin of these accounts," said the expert. "This discovery is consistent with the observations and actions recently undertaken by Facebook and Twitter on China".

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Two other giants of american technological, Twitter and Facebook had worn Monday, similar charges against Beijing, stressing it had suspended a thousand active accounts linked to this campaign of misinformation. Twitter was said to have also closed another 200,000 accounts before they are really active.

"These accounts were looking deliberately and specifically to sow the seed of political discord in hong Kong and, in particular, to undermine the legitimacy and the political views of the protest movement on the ground," explained Twitter about active accounts suspended.

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Facebook had clarified that some of the publications of the accounts suspended were comparing them to the protesters in hong kong to the fighters of the group islamic State, calling them "cockroaches" and their issuance of so-called projects of killings by means of slingshot.

semi-autonomous Region of southern China, hong Kong crosses since June its most serious crisis political since its handover in 1997, with protests and other actions almost daily to ask for more freedoms.

The engagement has often turned into clashes in recent weeks between militants and radical forces of the order. This led to threats of intervention more salient for the chinese central government, which has described the movement as "terrorist".

Beijing, however, has officially left a free hand to the local executive and its police to resolve the situation.

behind the scenes, the central government is making great efforts to attempt to influence the opinion, argue, however, Twitter, Facebook, and now Google.

The chinese ministry of foreign Affairs has assured, through a spokesperson, "not to be aware of the situation".

For its part, the centre of geo-political analysis Sufan Center believes indeed that "Beijing leads on the internet a disinformation campaign aimed to leverage the support shown to the authorities of hong Kong", a method inspired by Russia, according to the New York-based NGO.

To do this, the chinese government uses on the social networks of "bots, trolls and other accounts 'false nose'" to present the ongoing movements in hong Kong as the result of "foreign intervention", accused the soufan Center.

The organization believes, however, that it is difficult to measure the real impact of this propaganda in chinese in hong Kong, where the population has access to Twitter and Facebook, in contrast to mainland China where these networks are officially banned and blocked by the censorship.

The chinese social networks, closely controlled by the authorities, have also extensively used the key word "Lower masks", which would have been launched by the people's Daily, an organ of the chinese communist Party (CCP) in power, the Sufan Center. This keyword is explicitly intended to protesters in hong kong who cover their faces, suggesting that this practice conceals criminal and terrorist activities.

"as the protests, the attitude of China is expected to become more aggressive, both in the real and virtual world", provides for the NGOS.

She deplores the fact that the social networks, which have largely contributed to the arab Spring and the denunciation of violations of Human rights by the world, are now being hijacked by "governments autocratic".