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Today's CCTV Systems are far more complex than just a simple camera carrying images to a TV screen; they are very sophisticated computer devices consisting of many processing components and running a whole host of computing and internet services and protocols. Left unchecked and uncontrolled, these services and protocols can give criminal hackers a way into your network.
With many manufacturers now phasing out the production of traditional CCTV Systems (which were closed), anyone purchasing a CCTV System today is most likely to buy a 'networked' camera. The functionality offered by these systems gives users the ability to run any or all of the following on each separate device: compression chips (or software), encryption chips (or software), motion sensors, light sensors, operating system (usually Linux or a variant of), TCP/IP; UDP, FTP (many systems were still only running TFTP until about a year ago), web server, SNMP, SMTP, DNS (or Dynamic DNS), HTTP (and possibly HTTPS), Telnet, Shell, PHP scripting, task scheduler, (and more depending on functionality). More importantly is that they are linked into and managed over the corporate network, or the internet.
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