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25 July 2013 Last updated at 19:01 ET

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Chinese firm Huawei controls net filter praised by PM By Dave Lee Technology reporter, BBC News

Huawei has had considerable operations in the UK for almost a decade Continue reading the main story

Related Stories • Net block MP in porn hacking spat • Cameron hopes to limit porn access Watch • Cameron unveils online porn curbs The pornography filtering system praised by David Cameron is controlled by the controversial Chinese company Huawei, the BBC has learned. UK-based employees at the firm are able to decide which sites TalkTalk's net filtering service blocks. Politicians in both the UK and US have raised concerns about alleged close ties between Huawei and the Chinese government. The company says the worries are without foundation and prejudiced. On Monday the Prime Minister said TalkTalk had shown "great leadership" in setting up its system, Homesafe, which it has offered to customers since 2011. TalkTalk told the BBC it was comfortable with its relationship with Huawei, and that the service was very popular. Homesafe is a voluntary scheme which allows subscribers to select categories - including social media, gambling and pornography - that they want blocked. Customers who do not want filtering still have their traffic routed through the system, but matches to Huawei's database are dismissed rather than acted upon. Accountability question Mr Cameron has demanded similar measures be adopted by all internet service providers (ISPs) in the UK, to "protect our children and their innocence".

He said ISPs would be monitored to ensure filtering was done correctly, but that they should choose their own preferred solution. However, one expert insisted that private companies should not hold power over blacklists, and that the responsibility should lie with an independent group.

Please turn on JavaScript. Media requires JavaScript to play. David Cameron: "In the balance between freedom and responsibility we have neglected our responsibility to children" "It needs to be run by an organisation accountable to a minister so it can be challenged in Parliament," Dr Martyn Thomas, chair of the IT policy panel at the Institution of Engineering and Technology, told the BBC. "There's certainly a concern about the process of how a web address gets added to a blacklist - who knows about it, and who has an opportunity to appeal against it," he added. "You could easily imagine a commercial organisation finding itself on that blacklist wrongly, and where they actually lost a lot of web traffic completely silently and suffered commercial damage. The issue is who gets to choose who's on that blocking list, and what accountability do they have?" 'Policing themselves' For almost a decade, Huawei has been a core part of telecoms infrastructure in the UK - its biggest client, BT, has routinely said it has no concerns about using the firm. Huawei's founder Ren Zhengfei, a former officer in China's People's Liberation Army, visited Downing Street last year after his company made a ÂŁ1.3bn investment into its UK operations. Continue reading the main story

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Prime Minister David Cameron has announced that UK internet service providers (ISPs) will be putting pornography filters on domestic internet connections. The speech is the culmination of a long campaign by the government to get ISPs to impose default filters for

adult and sensitive subjects. But what will the changes mean in practice? • Q&A: UK filters on legal pornography But Huawei's position was recently the subject of an Intelligence and Security Committee (ISC) report. It criticised the lack of ministerial oversight over the firm's rapid expansion in the UK. The committee said "the alleged links between Huawei and the Chinese State are concerning, as they generate suspicion as to whether Huawei's intentions are strictly commercial or are more political" - but added that it had not found any evidence of wrongdoing. It said it had worries that a UK-based testing centre set up to examine Huawei products was staffed by experts employed by the Chinese firm. The ISC said Huawei was "effectively policing themselves". In the US, intelligence committees have gone further, branding Huawei a threat to national security. For its part, Huawei strongly denies having close ties with the Chinese government, pointing out it is majority owned by its employees. It welcomed the ISC's call for a review of the testing centre. Huawei executive Chen Li Fang said the company should not be treated unfairly just because it was Chinese. Policy enforcement Web filtering, which is not considered critical national infrastructure, was not covered in the ISC's report. But the logistics of how Mr Cameron's plans will be implemented have been the subject of much debate. Initially, TalkTalk told the BBC that it was US security firm Symantec that was responsible for maintaining its blacklist, and that Huawei only provided the hardware, as previously reported. However, Symantec said that while it had been in a joint venture with Huawei to run Homesafe in its early stages, it had not been involved for over a year. TalkTalk later confirmed it is Huawei that monitors activity, checking requests against its blacklist of over 65 million web addresses, and denying access if there is a match. The contents of this list are largely determined by an automated process, but both Huawei and TalkTalk employees are able to add or remove sites independently. Illegal websites - including ones showing images of child abuse - are blocked for all customers with the help of a list maintained by the non-profit Internet Watch Foundation. Mr Cameron said that the actions of ISPs would be monitored to ensure filtering is done correctly. Communications regulator Ofcom is expected to play some role in this, possibly by auditing the firms and reporting back to ministers regularly. Follow Dave Lee on Twitter @DaveLeeBBC

More on This Story Related Stories • Net block MP in porn hacking spat 24 JULY 2013, TECHNOLOGY • Cameron hopes to limit porn access Watch 22 JULY 2013, UK POLITICS • Cameron unveils online porn curbs 22 JULY 2013, UK POLITICS • Q&A: UK filters on legal pornography 22 JULY 2013, TECHNOLOGY

From other news sites • Business Insider Porn Filtering System David Cameron Praised Has Alleged Chinese Military Ties 4 hrs ago • About these results

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Chinese firm Huawei controls net filter praised by PM  
Chinese firm Huawei controls net filter praised by PM