Chapter7 -network secuirty Flashcards
What is a hacker ?
A hacker is someone who tries to gain unauthorised access to your computer with the intention of corrupting or stealing data
What is spamming ?
Sending bulk emails such as adverts for products. A large proportion of bandwidth is used so time is wasted opening and reading such emails
What is Phishing ?
Sending emails that appear to be from a reliable source. Users will often be asked to update their info and this info will then be used by hackers.
What is malware ?
Malicious software that is downloaded onto a computer unintentionally by a user
Name 3 types of malware ?
- Trojan horses
- worms
- spyware
What is a virus ?
A program which is designed to damage a computer system
How can you protect yourself from viruses ?
Installing an antivirus programme that will regularly scan your computer for threats.
What is a trojan horse ?
It gains entry into a users computer ‘ in disguise’ . Once installed some can do major damage like deleting files or displaying annoying pop-ups.
What is a worm ?
A worm spreads around from computer to computer in a network. It does this by replicating itself.
What are the problems with worm viruses ?
Worms require bandwidth which results in slower data transmission speeds
What is a key logger ?
It records a users keystrokes. The user is unaware that this is happening. it is used to steal personal info from the user ( also used by employers to monitor employees activities)
What is spyware ?
It uses the internet connection to monitor things like the websites a user visits. It can also be used to gather personal and bank details
What are the problems with spyware ?
It uses valuable memory in some cases the info is sold to a third-party
What is data encryption ?
The process of scrambling data using a ‘key’ before it is transmitted onto a network
What does the network manager allocated every user ?
- A unique username
- users can choose their own password
