This is the operating system that runs on Macintosh computers. It is pronounced, “mack-oh-es.” The Mac OS has been around since the first Macintosh was introduced in 1984. 144 more words
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To help SMEs understand the value of security, the topic of firewalls is the starting point. Microsoft defines a firewall as:
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“A firewall is software or hardware that checks information coming from the Internet or a network, and then either blocks it or allows it to pass through to your computer, depending on your firewall settings.