Network security, its
challenges and solutions

Vulnerability

various devices (servers, PCs,
routers)

Threats

Unstructured threats

Structured threats

External threats

Internal threats

Hacker

a person who tries to access
network resources with malicious
intent.

Cracker^

attempts to gain unauthorized
access to network resources

Phreaker

manipulates the telephone
network

the goal is to penetrate the
telephone network to make free
long-distance calls.

Spammer

use viruses to take control of home
computers

Phisher

uses email to steal confidential
information

White hat

use their abilities to find
vulnerabilities in systems or
networks

report these vulnerabilities to
system owners so that they can be
fixed

Black hat

use their knowledge of computer
systems to hack into systems or
networks

System access

Denial of service (DoS)

Malicious software

Trojan horses

Crypto Theft

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Microsoft Data Breach

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News Corp Server Breach

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Red Cross Data Breach

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Ronin Crypto Theft

theft due to a change in security
protocol

Cash App Data Breach

A lot of sensitive financial
information was stolen in the hack.