Computer Security
4. Computer security Active and passive security The internet is a network that connects computers and people around the world. It is a form of communication with many advantages, but it also has it risks: it is a world of information in which we have to move carefully. A computer is not a harmless tool. https://www.youtube.com/watch?v=yeepZr64XjU https://www.youtube.com/watch?v=wNuRKyMJRQk If we want to travel safely by car, it’s not enough to know how to drive: we must also know what safety devices the vehicle has (seatbelt, airbags, ABS, etc), and the traffic rules that govern interaction with other vehicles. Similarly, if we are going to use a computer on a network, we must: Know how to use it (we should be careful when using tools that we are unfamiliar with, especially online). Know what security tools are available to us (so we’ll know if we are protected against viruses, spam and websites with unwanted content). Apply a set ...