In response to the longtime, alarming proliferation of photos and videos containing child pornography on the Internet, Web search giants Google and Microsoft plan to introduce measures to block the content from their search results. The modifications will prevent more than 100,000 search terms from generating results that link to images and videos associated with child sex abuse and instead trigger a warning that the associated content is illegal. The restrictions, which apply to English-speaking countries, will be expanded to more than 150 languages in the next six months, Google Chairman Eric Schmidt wrote in an article for the Daily Mail on Sunday. “We’ve listened, and in the last three months put more than 200 people to work developing new, state-of-the-art technology to tackle the problem,” Schmidt wrote.