2.3 - Protect your Computer

Protecting Your Computer

• Anti-virus software (AV software) prevents malware damage. It detects and handles all malware threats, not just viruses.
• AV software works by identifying unique malware "fingerprints" (signatures). It continually checks files for these signatures.
• If a malware signature is found, the file is quarantined, preventing its use.
• Modern AV software is good, but new malware might not be recognized initially without updates.
• Updates are essential to add new malware signatures to the database.
• Malware can originate from email attachments. Criminals use misleading titles and impersonation to trick you into opening potentially malicious attachments.
• Be wary of suspicious emails from unknown senders, and avoid clicking unknown links in emails.
• Use official sites for downloads, as unofficial sites pose increased risks.

Firewalls

• Firewalls act as protective barriers around your computer, like a castle's walls.
• They check all data entering and exiting, allowing only safe data through.
• This approach is designed to prevent malware from entering.
• Firewalls and AV software work together to provide layered protection against malware on your computer.
• Never turn off or change firewall settings to avoid opening your computer to malware.

Updating Software

• Software updates are essential. Software companies frequently identify and address security risks or "errors".
• Updates are important to improve security, and make it harder for criminals to compromise systems.
• Immediately download any software updates, or check with an adult if the update seems suspicious.

Password Safety

• Strong passwords use combinations of upper and lower case letters, numbers, and symbols (e.g., $).
• Passwords should be at least 8 characters long.
• Changing passwords frequently and not sharing them is crucial for protection.
• Never write down passwords
• Use difficult passwords that are hard for hackers to guess.

Using Your Computer Safely

• Be careful of messages which falsely suggest you need to install software to fix your computer. Don't download any programs based on these messages!
• Use trusted websites when downloading apps or other software.
• Be responsible and safe when browsing the internet.
• Never click on links in unsolicited emails or messages.

Extra Challenge (Example for Guide):

• Creating Strong Passwords: Research methods like creating strong passwords using the passphrase method (from Student Book 5). Document these instructions and add examples.