System security involves protecting hardware, software, and data from both physical and digital threats. This includes preventing computer theft, fires, hacking, and viruses through identity verification methods, physical access controls, antivirus software, data encryption, and backing up data regularly with transaction logs to enable recovery from disk failures or data loss.

1. System Security What is it? It is concerned with taking care of hardware, software and most importantly data.

2. Physical software Types of security

3. Computers can be protected from: Computer theft Fires Dust Extreme temperature Voice printsA person speaks into a microphone and the computer analyses the voice. If it belongs to an authorized person, the computer allows entry to a room or allows access to a computer. Physical security

4. Identity CardsIn order to gain access to a room or a computer, a person may have to swipe an identity card through a card reader. Cont…….

5. Viruses Disk failure hacking Software hazards

6. Software security Installing anti viruses Taking precautions to avoid viruses during transfer of data such as buying pirated software CDs, used USBs, installing and use of free ware should be avoided. Data Encryption i-e The data may be encrypted (coded) into a form which can only then be decoded by the intended user. If the data falls into the wrong hands it will be meaningless.

7. Backing up data on regular basis. Creating transaction logs A record of all transactions made by a business since the last backup was made. Cont….

8. Some other software methods of Data Security