Security v Sharing

Any data packet sent across the network is vulnerable to a hacker, and even if encrypted can be decrypted relatively easily. Absolute security of information and access to information, e.g. via emails for sharing or for records management, are mutually excusive. You can't maximise both security and access; maximising one will minimise the other and vice versa. One Witness Seminar participant stated that if an email contains business critical information then it must have a security policy applied to and should not be shared; as soon as you start sharing information you have leakage. This statement caused immediate responses from other participants. One said that if you take away the point of sharing email you have no email. Another said that if you don’t share you have no business. In a construction project for example, sharing of information has to occur across organisational and often national boundaries. So how can we square this circle?