what type of system security malware allows for access to a computer, program, or service without authorization?

Backdoor. A backdoor is a computer program that bypasses standard security measure in a computer operating system to access the computer and its data. They secretly take control of a computer system either offline or over a network because they always exploit the operating system's vulnerabilities like system patches and updates. They are a type of RAT (remote administrative tool) and can do just about any thing on a computer system. Some back doors even install themselves as rootkit and will often modify the system's firmware settings for nefarious purposes.

The amount of current is measured in units calledamperes or amps. one ampere of current is equal to the chargeof 6,240,000,000,000,000,000 electrons flowing past a given pointin a circuit per second