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user: xstartup created: 2017-10-30 karma: 900 Email: istartup@protonmail.com submissions: Ask HN: How do you protect a PDF from being modified? 2 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments Ask HN: Which pdf form filler do you use? 3 points | 4 comments P2P encrypted chat with Whatsapp like seamless web experience 1 points | 2 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments Google ran out of instances on App engine? 2 points | 1 comments 0 points | 0 comments Where do you go for servers for personal projects? 4 points | 4 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments