You, or your company, need to be very aware of network security. There are more and more risks online and if you aren't proactive you may just end up having your system hacked. So, if you are asking, why network security, I have the answers to you.
There are so many things that can be compromised on the average home computer. Credit card information, bank accounts, personal data, etc. You just can't risk a thief getting their hands on such personal data.
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So why are you waiting for-