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Fighting pedophilia at the expense of our privacy: The EU rule that could break the internet
(english.elpais.com)
This is a most excellent place for technology news and articles.
Pedophiles would be terminally stupid if they used common, commercial chat systems and social media. Those who survive have probably their own forums completely disconnected from commercial prying eyes.
So in the end they would only catch a handful of very stupid amateurs while trampling on the rights to privacy and confidentiality of all citizens.