When it comes to cyber threats, there is a long list which a Network Security Engineer has to look into. Following are the some of the common cyber threats which can challenge the Network Security:
Viruses - A computer virus is just like a biological virus. It contaminates your system, takeovers certain documents and does unapproved activities.
Trojan horses - A Trojan horse will mask itself as a bland application but essentially has a malicious purpose.
Phishing - an email that appears like it was directed from a genuine business, however it is intended to steal individually recognizable data.
Spyware and adware - Software which enters your system and obtains personal data without the person's approval. It then gives the data to somebody else, yet again, without the individual’s approval.