Google and Microsoft have overhauled the way their search engines respond to queries for child sex abuse images, in response to mounting political and public pressure.
Both companies, which already block known child abuse images, have introduced new technology to make it even less likely that illegal content appears in their search results.
Google said it had substantially changed the way its algorithms responded to more than 100,000 search terms associated with child sexual abuse, and that for 13,000 terms it would display warning messages.
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