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NSA program collects 'nearly everything a user does on the internet'
Revealed: XKeyscore program gives 'widest-reaching' collection of online data -
How Microsoft handed the NSA access to encrypted messages
Exclusive: Documents show company collaborated closely with NSA and FBI to help intercept data -
NSA collecting phone records of millions of Verizon customers daily
Exclusive: Top secret court order requiring Verizon to hand over all call data shows scale of domestic surveillance under Obama administration
The NSA files whistleblower
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'They will say I aided our enemies'
Video (7min 07sec) In the second part of an exclusive interview, Edward Snowden contemplates the US government's reaction to his revelations
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Q&A with Edward Snowden
Exclusive: The whistleblower answered your questions about the NSA surveillance revelations
Read the documents
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Interactive
Guide for NSA employees and contractors on Bullrun outlines its goals – and reveals that the agency has capabilities against widely-used online protocols such as HTTPS
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Interactive
Document shows how 'signals intelligence', or Sigint, 'actively engages US and foreign IT industries to covertly influence and/or overtly leverage their commercial products' designs'
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Interactive
Guide reveals that NSA 'obtains cryptographic details of commercial cryptographic information security systems through industry relationships'
- More documents
More from the NSA files
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NSA chiefs defend agency's conduct in letter to families of employees
20 Sep 2013:General Keith Alexander and deputy director John Inglis sign letter 'in light of unauthorised disclosure of classified information'
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What rubbish, Sir Simon! Our intelligence agencies are not outside the law
20 Sep 2013: Malcolm Rifkind: Real issues arise out of the Snowden affair, but British security laws keep us safe without intruding on citizens' freedoms -
UK information commissioner to examine Snowden disclosures impact
19 Sep 2013: Christopher Graham asks advisers to look at encryption and other technology issues raised by Edward Snowden's disclosures -
Will Eric Holder guarantee NSA reporters' first amendment rights?
18 Sep 2013:John Cusack: The US attorney general vows not to prosecute journalists, but his criminalisation of whistleblowers undermines that assurance
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Fisa court: no telecoms company has ever challenged phone records orders
17 Sep 2013:Judge says requests for mass customer data have not been challenged 'despite the mechanism for doing so'
1-5 of 346 for The NSA files
Interactives
The story so far
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Edward Snowden and the NSA files
Leaked NSA documents have led to several hundred Guardian stories on electronic privacy and the state. Catch up on the key revelations
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