Security threats

• What is a Dos?


  when a hacker tries to stop users from accessing a part of a network or website
• How does a Dos work?

  hacker floods server with useless traffic making network slow
• What is scareware?


  when someone is scared into following links or paying for problems to be fixed when they dont need to
• What is ransomware?


  when files on a computer are locked and demand payment for them to be opened again
• What are rootkits?


  alter permissions and give hackers administrator access
• What is opening a backdoor?

  holes in someones security
• How do viruses work?

  Viruses attach themselves to files by copying themselves, and get activated when the infected files are opened
• How do worms work?

  Self replicate and exploit weaknesses in network security
• What do firewalls do?

  Inspect and filter incoming and outgoing data packets and block malicious ones
• What is anti-malware software?

  software designed to stop malware from damaging a network