Computer Security Risks and Protections

Lola is concerned about risks to her computer when using the Internet. For the risk: Computer virus. Identify one security method she could use and choose the option that best describes how it helps protect her computer. Each security method must be different across risks.

• Install and regularly update antivirus software to scan for, detect, and quarantine malicious programs before they can run

• Turn on a firewall to block all outgoing traffic so no files can be downloaded from any website

• Encrypt the hard drive so files cannot be read without a decryption key, even if the device is powered on

• Use a pop-up blocker to stop advertisements from appearing in the web browser

Lola is concerned about risks to her computer when using the Internet. For the risk: Hacking. Identify one security method she could use and choose the option that best describes how it helps protect her computer. Each security method must be different across risks.

• Enable a firewall to filter network traffic and block unauthorised connections from the Internet

• Run antivirus scans only after installing new applications to detect infected installers

• Defragment the hard drive so files are stored in contiguous blocks and open faster

• Schedule automatic cloud backups so copies of files are stored offsite

Lola is concerned about risks to her computer when using the Internet. For the risk: Spyware. Identify one security method she could use and choose the option that best describes how it helps protect her computer. Each security method must be different across risks.

• Use anti-spyware tools to detect, block, and remove software that monitors activity or captures data

• Encrypt outgoing email so messages cannot be intercepted and read while in transit

• Install a hardware firewall to prevent electrical surges reaching the computer

• Update the printer driver so documents print with higher fidelity and fewer errors

A law company requires employees to enter a username and a password to log in. Each password must be 8 letters. The company wants to increase the security of the log-in system. Select two improvements that would make the log-in system more secure and are appropriate for this scenario.

• Enforce strong passwords that use a longer minimum length with a mix of letters, numbers and symbols

• Introduce two-factor authentication such as a one-time code from an authenticator app or SMS

• Increase the length of usernames while keeping passwords the same

• Allow shared accounts so teams can log in with the same credentials

An art gallery uses Secure Socket Layer (SSL) to provide a secure connection when selling art on its website. Which description best explains the SSL process and how it provides a secure connection?

• The browser and server complete a handshake that verifies the server’s digital certificate, agrees on encryption, and then encrypts the session using keys established during the handshake

• The server hides pages from search engines and blocks unknown IP addresses so attackers cannot find the site

• The client sends its MAC address to the server, which encrypts the password and stores it in a cookie for future logins

• The website is compressed to reduce size and therefore attackers cannot read the data while it is being transmitted

The art gallery also uses a firewall. Statement: Firewalls are only available as hardware devices. Indicate whether the statement is true or false.

• True

• False

The art gallery also uses a firewall. Statement: Firewalls allow a user to set rules for network traffic. Indicate whether the statement is true or false.

• True

• False

The art gallery also uses a firewall. Statement: Firewalls will automatically stop all malicious traffic. Indicate whether the statement is true or false.

• True

• False

The art gallery also uses a firewall. Statement: Firewalls only examine traffic entering a network. Indicate whether the statement is true or false.

• True

• False

The art gallery also uses a firewall. Statement: Firewalls encrypt all data that is transmitted around a network. Indicate whether the statement is true or false.

• True

• False