Google and Microsoft are two of the tech firms which have agreed to block child porn from their search results.
The firms have ensured that 100,000 search terms linked with online child sexual abuse will show no results, while 13,000 such searches would also prompt warnings that child abuse is against the law and direct the user to seek help.
Google executive chairman Eric Schmidt told the Daily Mail that the search engine giant has come up with new technology which has enabled illegal searches to be blocked.
"We will soon roll out these changes in more than 150 languages, so the impact will be truly global," Schmidt said.
Initially, the restrictions would be rolled out in the UK, followed by expansion into 158 other languages over next six months.
Schmidt added on the subject of the warnings: "These alerts make clear that child sexual abuse is illegal and offer advice on where to get help."
The tech firms’ latest move comes after PM David Cameron urged Google and Microsoft’s Bing to work harder on preventing users’ access to explicit images.
Mr. Cameron also called for boycotting social networking sites that do not ‘step up to the plate’ and deal with online abuse.
More child abuse imagery is hosted on sites using Tor, the ‘hidden internet’, where paedophiles escape detection by running their activities through numerous layers of encryption.
