Viruses S.1
A computer virus is a type of malicious software (malware) that can spread between computers and cause damage to data and software . The goal of a computer virus is to disrupt systems, cause major operational issues, and result in data loss and leakage. The common kinds of computer viruses are: 1. File Infector Viruses: Infect executable files (.exe, .com, .dll) by attaching themselves to the code of legitimate programs. Examples: Cascade, CIH, Sasser. 2. Boot Sector Viruses: Infect the master boot record (MBR) or boot sector of storage devices, enabling them to execute before the operating system loads. Examples: Stoned, Michelangelo. 3. Macro Viruses: Written in macro language and embedded within documents (e.g., Word, Excel) and spreadsheets. Spread through infected documents when opened with compatible software. Examples: Melissa, Concept. 4. Polymorphic Viruses: Employ encryption and code mutation techniques to change their appearan...