Separating files of one user from another = is user’s permissions Making data secure and hard to read by unauthorised users = is Encryption Detecting malicious files received from the Internet = is Anti-Virus Blocking unwanted traffic trying to access a network = is Firewall     List the names, purposes and characteristics of a range of security techniques. You have now talked more about the purpose. However, you still need to talk about the more technical details of each security technique that you have identified (standard and admin accounts, BitLocker encryption, anti-virus, firewall). Justify the use of a range of security techniques in typical situations. It may help to consider what would happen without the security mechanisms and go from there.