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121
votes
14answers
39k views

What “hacking” competitions/challenges exist? [closed]

I have always enjoyed trying to gain access to things I'm not really supposed to play around with. I found Hack This Site a long time ago and I learned a lot from it. The issue I have with HTS is that ...
8
votes
2answers
340 views

What are some good arguments for having your work send you to e.g. DEFCON or Black Hat

What are some good arguments for getting your work to send you to the popular con's? Some of them can involve quite a bit of travel cost thus increasing the need for good arguments for going. I'd ...
3
votes
1answer
60 views

Is ZRTP for secure multi user group video conferencing?

I haven't find anywhere specifics about ZRTP's ability for secure encrypted group video/audio conferencing, so I am asking you. I know that OTR does not support multi user group chat, so is that same ...