title: How secure are presigned URLs in AWS S3?
body: <p>I am planning to redirect users to presigned URLs of sensitive resources stored in S3. These get generated after checking the user's rights and have aggressive timeouts (30 secs). My worry however is whether it would be possible by some malware that is present on my client's machine to capture the url and still download the file within the expire time of the URL. Or Am I just being too paranoid? </p>
  
  <p>If this has been answered before, please point me in that direction. Appreciate your help.</p>