ICT 0417 - Networks and the Effects of Using Them

Objective: Know and understand scanning data/software when downloading.

Downloading Data and Software: The Importance of Scanning

When you download data or software from the internet, it's crucial to scan it for malicious content. This is because downloaded files can potentially contain viruses, worms, trojans, or other harmful software that can damage your device, steal your information, or compromise your privacy.

What is Scanning?

Scanning involves using antivirus or anti-malware software to examine downloaded files for known threats. The scanner compares the file's content with a database of known malicious signatures.

Why is Scanning Necessary?

The internet is a vast and sometimes risky place. While many websites and file sources are trustworthy, some may intentionally distribute harmful software. Scanning acts as a protective measure to identify and block these threats before they can cause damage.

How to Scan Files

1. Use Antivirus Software: Ensure you have a reputable antivirus program installed and that it is up to date.
2. Initiate a Scan: Most antivirus programs have an option to scan files. This can usually be done by right-clicking on the downloaded file and selecting "Scan with [Your Antivirus Program]".
3. Automatic Scanning: Many antivirus programs are set to automatically scan downloaded files. Check your antivirus settings to ensure this feature is enabled.
4. Verify Source: Always download files from trusted sources, such as official websites or reputable software repositories.

Types of Scans

Type of Scan	Description
Quick Scan	Scans commonly accessed areas of the file for threats. It is faster but may miss threats in less frequently accessed areas.
Full Scan	Scans the entire file for threats. It takes longer but provides a more thorough check.
Custom Scan	Allows you to specify which files or folders to scan.

What to do if a Threat is Found

If your antivirus software detects a threat, it will typically attempt to remove or quarantine the infected file. Follow the instructions provided by the antivirus software. If the threat cannot be removed, it's best to delete the file and avoid using the source from which it was downloaded.

Staying Safe Online

Besides scanning, there are other ways to stay safe online:

• Keep your operating system and software up to date.
• Be cautious about clicking on links or opening attachments from unknown senders.
• Use strong passwords and enable two-factor authentication.
• Be aware of phishing scams.