Anti-spyware software

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. What is the main job of anti-spyware software?

A Scan for and remove programs that secretly monitor the user

B Speed up the internet connection

2. Which program could anti-spyware software detect and remove?

A A key logger that records every key you type

B A word processor that you installed on purpose

3. Which describes a scan for spyware?

A The software checks files and programs on the device for known spyware

B The software encrypts every file so that no one can read it

4. What does real-time protection in anti-spyware do?

A It only checks for spyware when the computer is switched off

B It watches constantly and blocks spyware as it tries to install or run

5. What is the benefit of real-time protection over a manual scan only?

A The user no longer needs to install any software

B Spyware is blocked straight away, not found days later

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1scan_for_spyware(computer)		ATurning real-time protection off after a scan leaves the computer open to new spyware. It should stay ON so spyware is blocked as it tries to run.
2real_time_protection = ON		BAnti-spyware watches continuously and blocks a spying program as soon as it tries to install or run
3Anti-spyware removes any spyware that a scan has found, such as a key logger		CAnti-spyware does not encrypt keystrokes. It scans for, removes and blocks the spyware that records them.
4Anti-virus focuses on viruses, while anti-spyware focuses on programs that secretly monitor the user		DRuns an on-demand scan that searches the files and memory of a computer for hidden spyware
5IF scan_finished THEN real_time_protection = OFF		EIF spyware_found THEN remove(spyware)
6anti-spyware encrypts the keystrokes sent by a key logger		FIF program_logs_keystrokes THEN block(program)

Definitions

anti-spyware

Fill in the Blanks

Complete each line of code by filling in the missing parts.

antispyware.____("C:/Downloads")

antispyware.______(spyware)

antispyware.realtime ← __

IF spywareFound = ____ THEN remove

antispyware._____(keylogger)

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A FOR EACH file IN scan_list

B IF file IN spy_list

C quarantine(file)

D ENDIF

E NEXT file

Question 2

A WHILE computer_is_on

B IF download IS safe THEN

C block(download)

D ENDWHILE

Question 3

A tool ← "anti-spyware"

B target ← key loggers

C PRINT tool, "removes", target

Question 4

A realtime ← FALSE

B WHILE realtime = TRUE

C watch_programs()

D ENDWHILE

Question 5

A PROCEDURE scan drive

B FOR EACH file IN drive

C check(file)

D NEXT file

E ENDPROCEDURE

Answer Key

Anti-spyware software

Section A: Quick Questions

A — Scan for and remove programs that secretly monitor the user

A — A key logger that records every key you type

A — The software checks files and programs on the device for known spyware

B — It watches constantly and blocks spyware as it tries to install or run

B — Spyware is blocked straight away, not found days later

Section B: Match the Pairs

scan_for_spyware(computer) → Runs an on-demand scan that searches the files and memory of a computer for hidden spyware

real_time_protection = ON → Anti-spyware watches continuously and blocks a spying program as soon as it tries to install or run

Anti-spyware removes any spyware that a scan has found, such as a key logger → IF spyware_found THEN remove(spyware)

Anti-virus focuses on viruses, while anti-spyware focuses on programs that secretly monitor the user → IF program_logs_keystrokes THEN block(program)

IF scan_finished THEN real_time_protection = OFF → Turning real-time protection off after a scan leaves the computer open to new spyware. It should stay ON so spyware is blocked as it tries to run.

anti-spyware encrypts the keystrokes sent by a key logger → Anti-spyware does not encrypt keystrokes. It scans for, removes and blocks the spyware that records them.

Section C: Definitions

anti-spyware — Software that scans for and removes spyware, and blocks programs that secretly monitor the user, such as key loggers. It can scan on demand or protect in real time.

Section D: Fill in the Blanks

antispyware.scan("C:/Downloads")

antispyware.remove(spyware)

antispyware.realtime ← ON

IF spywareFound = TRUE THEN remove

antispyware.block(keylogger)

Section E: Spot the Error

B — An IF statement must end with THEN. The line should be: IF file IN spy_list THEN. This is how a scan checks each file against known spyware.

B — Real-time protection should act on spyware, not on safe downloads. The condition should be: IF download IS spyware THEN, so only the spyware is blocked.

B — Text values must be in quotes. Without them, key and loggers would be read as variable names. It should be: target ← "key loggers".

A — Real-time protection must be switched on. If realtime is FALSE the loop never runs, so no programs are watched. It should be: realtime ← TRUE.

A — The parameter must be in brackets after the procedure name. The line should be: PROCEDURE scan(drive). This procedure scans every file on a drive for spyware.