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what are the main types of network attacks (6)
malware
social engineering
brute force attacks
ddos attacks
data interception
sql injection
what does malware mean
malicious software used to harm a computer system
issues caused by malware (3)
files being deleted, corrupted or encrypted
internet connection becoming slow or unusable
computer crashing or shutting down
types of malware (5)
trojan horse
virus
worms
ransomware
spyware
what is a virus
a program that can replicate itself cause unwanted and unexpected events to occur
issues caused by viruses (3)
corrupted files
deleted data
applictions prevented from running correctly
what is a worm
malware similar to a virus that can spread to other drives and computers on the network
ways worms can infect another computer through (4)
infected website
instant message services
network connections
what is a trojan horse
malware that is disguised as legitimate software but contains malicious code in the background
what is spyware
software that allows a person to spy on user’s activities on their devices
what can spyware do (3)
record your screen
log your keystrokes
gain access to passwords
where is spyware often recieved from
spyware is often embedded into games or programmes that have been downloaded from illegitimate sources
what is ransomware (3)
malware that locks your device and encrypts important files
a demand for money is made for the user to gain back access
there is no guarantee that they will get their data back though
what is social engineering
exploiting weaknesses in a computer system by targeting the people that use or have access to them
types of social engineering (3)
fraud phone calls
phishing
pretexting
what are fraud phone calls
pretending to be someone else to gain access to their account or their details
what is phishing
sending fraud mails to lots of email addresses, claiming to be from a reputable company to gain access to your details
what is pretexting
a fake text message pretending to be from the government or a company to trick you into giving confidential data
what are human errors (5)
not locking doors to server rooms
not locking their devices
sharing passwords
not encrypting data
not keeping up with software or anti-malware updated
what is a brute force attack
multiple combinations of a user's password are tried to gain unauthorised access to their accounts or devices
what is a dictionary attack
when popular words or phrases for passwords are tried to guess the password as quickly as possible
what is a denial of service attack
when an attacker repeatedly sends requests to flood a server with traffic causing it to overload the system slow it down and make it unusable
traffic comes from multiple distributed devices in a coordinated attack on a single server/network
what is a botnet
multiple internet-connected devices that have been infected with malware and can be controlled remotely by an attacker
purpose of a denial of service attack
prevents customers from accessing or using a service causing companies to lose money and damage their reputation
what is data interception
when sensitive information is intercepted when being transmitted across a network to gain unauthorised access
what is a packet sniffer
able to collect the data that is being transferred on a network
what is sql
a language used to create, access and manipulate a database
what is an sql injection
when an sql command is entered into a web text field to manipulate the SQL query to insert modify or delete data
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