The BBC has revealed in a recent report that the controversial Chinese telecom equipment giant Huawei controls the pornography filtering system - dubbed HomeSafe - which was praised by British Prime Minister David Cameron earlier this week.

The HomeSafe porn filtering system essentially pivots around automated software which categorizes content on the basis of keyword searches, and then divides it into different categories that can be filtered by users. Though the software was designed by a joint-venture between US-based security firm Symantec and Huawei, the venture is now solely owned by Huawei.

According to the BBC report, the UK-based employees at Huawei are able to decide which sites are blocked by the net filtering service offered by TalkTalk, which had been praised by Cameron on Monday for showing "great leadership" in setting up the HomeSafe system. TalkTalk has been offering the system to customers since 2011.

Despite the fact that politicians in the US as well as the UK have been raising concerns about the allegedly close ties between Huawei and the Chinese authorities, TalkTalk told the BBC that its relationship with Huawei was a `comfortable' one, and the filtering service - controlled by Huawei - was very popular with customers.

Confirming that Huawei monitors the filtering activity, by not only checking requests against its blacklist of over 65 million web addresses, but also denying access if any match is found, TalkTalk said that its employees - along with Huawei - are able to add or remove sites independently.