Network security threats

Network security threats

1. system security = protection for system, networks and data.

   • protects from malicious software and prevents data from being stolen
   • protects from cyberattacks and unauthorised access

2. Forms of attack

   • Passive attack(data is monitored)
   • active attack(Data's modified-malware)
   • Inside attack(someone in organisation)
   • Outside attack(from external user

3. System security threats

   • Brute force attack(all password combinations used systematically)
   • Denial of service attack(deliberately overloaded with unnecessary requests making network not run properly)
   • Distributed DOS( when unnecessary requests come from numerous sources so you cant just block a single IP address
   • Structure query language injection(putting details into a website and then someone either deletes these details or change them)
   • Malware(developed software made to damage, disrupt or take control of computer systems)
   • social engineering(manipulation into people giving them private details

4. Types of malware

   • computer viruses(can replicate and transfer to other computer systems, they are often email attachments or other attachments that look very real)
   • trojan(acts as legitimate software, it allows unauthorised backdoor access)
   • spyware(records activity on computer such as keystrokes so it can gain all your passwords and other important data, also can be used on webcams and microphones)
   • adware( popups and banners installed onto actual system, not dangerous but does slow down performance)
   • worms(spread like viruses but dont need humans to spread so just as deadly)

5. types of social engineering

   • blagging/pretexting(fraudsters make up scenarios to con victims into revealing something they normally wouldn't)
   • Phishing(send an email or message as someone important-bank- which lures them into giving details)
   • pharming(fake websites, for example you may go to a fruad shopping website and put in your details to buy something but it is not real)
   • shoulder surfing(when using ATM's people will look at your card details