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System attacks and threats (Reasons for cyber attacks (fun/challenge,…
System attacks and threats
Hacking
The UK experiences over 375 cyber attacks
every hour
1 in 5 UK citizens have had an online
account hacked
What is a hacker?
A hacker is a person who gets access to a
computer system without permission
A hacker who misuses computers
is known as a ‘black hat’ hacker
They can use it to access your private data,pictures and other stuff they can also delete things as if they were you.
Reasons for cyber attacks
fun/challenge
financial gain
disruption
information/data theft
personal attack
industrial espionage
Malware
The word malware comes from two words malicious and software
Malware are executable programs that run
on a computer
One type of malware that exists is a computer virus
Spyware
Spyware allows an attacker to spy on a
user’s computer without their consent
Spyware is often delivered by a
Trojan horse and can cause internet connectivity problems
and can also record private or personal data entered into the
computer
Rootkit
A rootkit is a set of programs that aims to gain root or administrator access to a computer
Denial of service
In a denial of service attack a hacker will use or infect a computer so that it sends as may requests to the server as it can known as a flood, the server then cant respond fast enough so slows down or goes offline.
In a distributed denial of service attack known as of ddos many computers are used to send the requests.
Botnet
Botnet comes from robot network
In a botnet a hacker will first infect machines to make zombie devices