(Klikken: 163;website toegevoegd: Nov 22, 2013, cipher)
This site provides several security oriented challenges for your entertainment. It is actually one of the oldest challenge sites still around. The challenges are diverse and get progressively harder.
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try2hack.nl(Klikken: 100;website toegevoegd: Apr 19, 2015, cipher)
Online TLS certificate chain download and validation check. EV certificate awareness. Chain in ASCII text. Based upon OpenSSL. Beta cipher scanner.
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paranoidsecurity.nl(Klikken: 60;website toegevoegd: Jun 26, 2015, cipher)
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