Series: Glenn Greenwald on security and liberty NSA and GCHQ unlock privacy and security on the internet . NSA and GCHQ unlock encryption used to protect emails, banking and medical records . $250m-a-year US program works covertly with tech companies to insert weaknesses into products . Security experts say programs 'undermine the fabric of the internet' US and British intelligence agencies have successfully cracked much of the online encryption relied upon by hundreds of millions of people to protect the privacy of their personal data, online transactions and emails, according to top-secret documents revealed by former contractor Edward Snowden. continua qui http://www.theguardian.com/world/2013/sep/05/nsa-gchq-encryption-codes-secur...