• 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’
This story has been reported in partnership between the New York Times, the Guardian and ProPublica based on documents obtained by the Guardian.
For the Guardian: James Ball, Julian Borger, Glenn Greenwald
- For the New York Times: Nicole Perlroth, Scott ShaneFor ProPublica: Jeff Larson