Security

1. Phishing is a cybercrime where attackers pose as legitimate institutions (like banks) via email, telephone, or text message.
2. The goal is to trick individuals into revealing sensitive data such as personally identifiable information, banking and credit card details, and passwords.
3. It relies on social engineering rather than technical hacking.

1. A Computer Virus is a type of malicious software (malware) designed to replicate itself by modifying other computer programs and inserting its own code.
2. It spreads from one computer to another through infected files, emails, or storage devices.
3. Viruses can damage data, slow down systems, or cause system failures.

1. Cloud Computing is the delivery of computing services—including servers, storage, databases, networking, and software—over the Internet ("the cloud").
2. It offers faster innovation, flexible resources, and economies of scale.
3. Users pay only for the cloud services they use, lowering operating costs (e.g., Google Drive, AWS).

1. In the context of computers and the internet, the prefix "E-" stands for Electronic (e.g., E-Mail, E-Commerce).
2. E-Security refers to the measures taken to protect electronic data and systems.
3. Options (b) and (c) are unrelated to the standard terminology.

1. In asymmetric cryptography, a pair of keys is used: a Public Key (shared) and a Private Key (secret).
2. The Private Key is used to decrypt messages that were encrypted with the corresponding Public Key.
3. It is also used to sign digital documents to prove the identity of the sender.

1. The primary purpose of encryption is to secure data privacy and integrity.
2. It involves transforming "Plaintext" (readable data) into "Ciphertext" (scrambled data) using an algorithm.
3. Only authorized parties with a specific decryption key can convert it back to readable format.