Unit 4


Malware is a term used to describe malicious software, including spyware, ransomware, viruses, and worms. Malware breaches a network through a vulnerability, typically when a user clicks a dangerous link or email attachment that then installs risky software. Once inside the system, malware can do the following:

  • Blocks access to key components of the network (ransomware)
  • Installs malware or additional harmful software
  • Covertly obtains information by transmitting data from the hard drive (spyware)
  • Disrupts certain components and renders the system inoperable

Phishing is the practice of sending fraudulent communications that appear to come from a reputable source, usually through email. The goal is to steal sensitive data like credit card and login information or to install malware on the victim’s machine. Phishing is an increasingly common cyberthreat.

 

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