A cracker is an individual who breaks into computer systems via the Internet and uses them without authorization, often with malicious intent.
Encryption is the encoding of electronic data so that it can be transmitted without interception. With the growing use of the Internet for commercial purposes, there has been an ongoing need for secure encryption methods, notably in the transmission of credit card details.
A person who uses a computer system without authorization, gaining access typically through an Internet connection, often to exploit or manipulate data and systems.
Spam refers to unsolicited and often irrelevant messages sent over the internet, typically to a large number of users, for the purpose of advertising, phishing, spreading malware, or other nefarious activities.
