_____________________________________TLS Ecosystems in Networked Devices vs. Web Servers
       Background
       Rapid growth of Internet-connected devices (IoT)
         Forecast: 
             25-50 billion devices (Cisco, Ericson, Gartner) by 2020
             26 devices/person
             Economic impact: $2-$5 trillion
           They will increase opportunities for an attacker
         Rise in TLS adoption to improve communication security
                   ____________________________________________Nayanamana Samarasinghe__Apr 5, 2017__2
     _____________________________________TLS Ecosystems in Networked Devices vs. Web Servers
      Devices in focus
                ____________________________________________Nayanamana Samarasinghe__Apr 5, 2017__3
     _____________________________________TLS Ecosystems in Networked Devices vs. Web Servers
      Motivation
      Several measurement studies done on TLS 
       vulnerabilities of websites
         
           TLS ecosystem of the web is improving
      But what about devices?
                ____________________________________________Nayanamana Samarasinghe__Apr 5, 2017__4
     _____________________________________TLS Ecosystems in Networked Devices vs. Web Servers
      Our goals
        Study TLS vulnerabilities in devices
           Parameters used in secure communication 
             (SSL/TLS) of devices
        TLS parameters in Alexa 1M sites used for 
          comparison
                ____________________________________________Nayanamana Samarasinghe__Apr 5, 2017__5
      _____________________________________TLS Ecosystems in Networked Devices vs. Web Servers
       Some options for large scale collection of TLS certificates
        EFF SSL Observatory
        Rapid 7
        ZMap
        Shodan
                  ____________________________________________Nayanamana Samarasinghe__Apr 5, 2017__6