You would not leave your home without locking the door behind you and likewise you would protect your car when parked, so why do we quite happily leave documents open for anyone to see, print, alter or otherwise manipulate?
However, this ...
One very important area of email security is encryption. Unless you are using leased lines or virtual private networks (VPNs) to transmit information, the moment an email leaves your firewall it is at the mercy of the internet. Emails can be intercepted and read without your even knowing about it, ...