Difference between ethical hacking and computer virus

Some examples of hacking include-

Using password cracking algorithm to gain illegal access
Introducing Trojan or similar malware into cybersecurity network
DriveIn Downloads that result in unauthorized download and installation of malware
RootKits which give unauthorized access to the attacker

Some instances of unethical hacking include-

Internet searches being directed to other unrelated sites
Antivirus Software getting disabled on its own
Speed of a computer slowing down to a crawl

Computer Security
•Definition
–is the protection of information systems from theft or damage to the hardware, the software, and to the information on them, as well as from disruption or misdirection of the services they provide.

•Computer Security measures
–Data encryption
–Passwords

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Goals of Computer Security
•Integrity
–Guarantee that the data is what we expect
•Confidentiality
–The information must just be accessible to the authorized people
•Reliability
–Computers should work without having unexpected problems
•Authentication
–Guarantee that only authorized persons can access to the resources

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Types of Threats
•Passive Threats
–Interception

•Active Threats
–Interruption
–Modification
–Fabrication

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Types of Threats
•Interception
–An unauthorized party gains access to an asset
–Attack on confidentiality
–Wiretapping to capture data in a network
–Illicit copying of files or programs