CISSP All Domains Practice test 8

Viruses - require some sort of human interaction and are often transmitted by USB sticks or other portable devices. When the program is executed, they replicate themselves by inserting their own code into other programs. Macro (document) viruses: Written in Macro Languages; embedded in other documents (Word, Outlook). Boot Sector viruses: infects the PC's boot sector or the Master Boot Record, ensuring it runs every time the PC boots. Stealth Viruses: try to hide themselves from the OS and antivirus software. Polymorphic Viruses: change their signature to avoid the antivirus signature definitions. Well-written polymorphic viruses have no parts that remain identical between infections, making it very difficult to detect directly using antivirus signatures.  Multipart (Multipartite) Viruses: spread across multiple vectors. They are often hard to get rid of because even if you clean the file infections, the virus may still be in the boot sector and vice-versa.