Violating the security -covert channels: indirect ways for transmitting information with no explicit reading of confidential information. in other words, the communication is out in plain view, but invisible to those who dont know how to look for it. this kind of difficulty has induced some researchers to rethink from scratch the whole problem of guaranteeing security in computer systems. some obscure techniques which can be utilized to create covert channels include hiding messages using the first letters of each word in a longer communication, blinking eyes in morse code during a conversation, etc. even something as mundane as some of the signals used by a baseball team, if non-obvious enough, could be considered a covert channel.covert channels are not a way to strengthen the security policy of an organization, hardening the system or protecting the dmz - they are a security risk, not a security-enhancing technique.
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