Session 08

Started session 08 with a video about password. In the video we mustn't share password with anyone and if someone knows about it, we must change it. Our password must at least be 8 characters and contains upper and lower cases as well as numbers. We mustn't use the same password on every site and NEVER use dictionary words. Last but not least change the password as often as possible.
After that, we continue our lesson with Computer Security. It means protecting our computer system and the information inside it. Hackers, crackers and script kiddie can hack into our computer system and take the information they want. There are 3 types of security: a) hardware security b) software/data security c) network security. Then we learned about threats that can be made to a computer. Malicious codes like virus, Trojan horse, logic bomb, trapdoor and backdoor, worm and others. Other than malicious codes, natural and environmental surroundings can also cause threat to the computer. For example, flood, tornado, excessive heat and more.
Lastly we learned about security measures that can be taken to protect the computer system. By using data backup which copies the entire data and puts it into another system, cryptography which is a process of hiding information or anti-virus which protects the computer against viruses. Not only that, anti-spyware and firewall can also be use to protect the computer system. Anti-spyware is a program placed in a computer without the user's knowledge and firewall is a device or set of devices designed to permit or deny network transmissions based upon a set of rules and is frequently used to protect networks from unauthorized access while permitting legitimate communications to pass.