Flashcards
Unit 3 - Whatever this unit is - Flashcards
Cards in this deck (27)
- 1What is a passive attack?An attack which involves someone monitoring data and intercepting sensitive information.
- 2Name a piece of network monitoring hardware or software.Examples include packet sniffers.
- 3What is the best form of defence against passive attacks?Data encryption.
- 4What is an active attack?When someone attacks using malware or other planned attacks.
- 5What is the best defence against active attacks?Firewalls.
- 6What is an insider attack?When someone within an organisation exploits network access to steal information.
- 7What is a brute force attack?A type of active attack which used to gain information by cracking passwords through repeated trial and error.
- 8What could hackers use in a brute force attack and would it help them?Automated software which generates hundreds of likely passwords against one username or vice versa.
- 9Name one way to prevent a successful brute force attack.Locking accounts after a certain number of login attempts or using strong passwords.
- 10What does a DoS attack stand for?Denial of service attack.
- 11What is a denial of service attack?Where a hacker tries to stop access to a part of a network or website by flooding the network with useless traffic making the network slow down.
- 12Name four actions that malware could do to your computer.Deleting/modifying files, Scareware, Locking files (ransomware), Spyware (Monitoring user actions), Rootkits, Opening backdoors in security.
- 13What is scareware?It tells the user that their computer has been infected with loads of viruses to scare them into following suspicious links or paying for problems to be 'fixed'.
- 14What is ransomware?A program which encrypts all the files on a person's computer. The user can receive an encryption key in exchange for large sums of money.
- 15Give an example of what actions spyware can monitor.Key presses etc.
- 16What do rootkits do?Alter computer permissions to give hackers administrator level access.
- 17Give three examples of malware.Viruses, Worms, Trojans.
- 18What are viruses?Viruses attach themselves to files such as .exe and autorun scripts. Users spread them by copying them and activate them by opening infected files.
- 19What are worms?They are like viruses but self replicate without any user action. They can spread very quickly and can exploit weaknesses in network security.
- 20What are Trojans?Trojans are malware disguised as legitimate software. Unlike viruses and worms, Trojans don't replicate - Users install them not realizing they have a hidden purpose.
- 21What is social engineering?It is a way of gaining sensitive information or illegal access by influencing people.
- 22A common form of social engineering takes place over the phone. How does this happen?Someone will call up a company for example and pretend to be a network administrator. They will gain the trust of the employee and then ask them to disclose sensitive information.
- 23What is phishing?When a criminal sends emails or texts to people claiming to be from a well known company or website. They will then ask for personal information which the criminals steal.
- 24Many computers or programs have anti-phishing features. James doesn't have access to these features. What should he look out for?Poor grammar, requests for sensitive information, lack of personalisation, fake addresses, sense of urgency.
- 25Name five methods to prevent network security attacks.Network policies, Pen testing, network forensics, passwords, user access levels, Anti-Malware software, Encryption.
- 26Name three things a good network policy should include.Testing the network, Using passwords, Enforce user access levels, Install anti-malware and firewall software, encrypt sensitive data.
- 27—
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- Contains: Network security threats Network vulnerabilities Operating system software Utility Software
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- Computing ODA
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- Created by a deleted user · Jan 19, 2017
- Copied by Computing ODA · Sep 27, 2017
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