Help please
A small program written to alter the way a computer operates, without the permission or knowledge of the user is called

trojan horse

All of the above

virus

worm

ransomeware

Awide variety of “ apps “ are available to customize devices. which category of app does the word processing software fall into?

1. which of the following is a search engine? a) mozilla firefox b)internet explorer c)google d)safari 2. which of the following statements is true? a) all search engines will provide the same results when you enter the same query. b) all search engines use the same amount of advertisements. c) some search engines are also browsers. d) search engines often provide different results, even when you enter the same query.

Need ! will choose brainliest! discuss the role of abstraction in the history of computer software.