Course Content
Passwords
Discover why strong passwords are the first line of defense in cybersecurity. Learn techniques to create complex, hard-to-crack passwords and best practices for managing them securely, including tools like password managers.
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Cyber Security Videos
Explore key areas of cybersecurity with lessons designed to empower individuals and businesses to protect themselves in the digital landscape. This topic delves into practical strategies and real-world examples to tackle modern cyber threats effectively. What You'll Learn: - Cybersecurity for Small Businesses: Tailored solutions to secure your business operations, protect sensitive data, and implement cost-effective defenses. - Ransomware Threats: Understand how ransomware attacks work, their impact, and actionable steps to prevent and recover from them. With quizzes included to test your understanding, this topic equips you with the knowledge and tools to confidently address cybersecurity challenges in your organization or personal life.
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Cyber Security Fundamentals
Topic: Cybersecurity Fundamentals Master the core principles of cybersecurity with this essential topic. From recognizing common threats to implementing effective protective measures, these lessons provide a solid foundation for anyone looking to enhance their digital security. What You'll Learn: - Phishing: Identify deceptive emails, links, and messages used to steal sensitive information and how to avoid falling victim. - Ransomware: Gain a deeper understanding of ransomware attacks, their risks, and the strategies to prevent them. - Computer Viruses: Learn how viruses operate, how they spread, and the steps to safeguard your devices. - Antivirus Solutions: Discover the role of antivirus software in cybersecurity and how to choose and configure the right one for your needs. - Data Protection: Explore best practices for encrypting, storing, and managing data securely to ensure compliance and prevent breaches. This topic is ideal for individuals and businesses looking to strengthen their defenses against today’s most common and dangerous cyber threats.
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Cyber Security Final Exam
Assess your overall comprehension of key cybersecurity topics with the following quiz. It’s designed to confirm your understanding of the key learning objectives and identify areas for improvement.
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Private: STS Cyber Security Demo
About Lesson

Lesson on Computer Viruses: Understanding and Safeguarding Against Them

1. What is a Computer Virus?

A computer virus is a type of malware that attaches itself to legitimate programs or files and spreads by infecting other files or systems. It’s called a “virus” because it behaves like a biological virus, infecting and replicating itself within a host system.

2. How Computer Viruses Work

Computer viruses are typically spread through various means, including:

  • Infected Files: Viruses can attach themselves to executable files or documents. When you open these files, the virus is activated.
  • Email Attachments: Viruses can be delivered via infected email attachments. Opening these attachments can trigger the virus.
  • Malicious Downloads: Downloading files from untrustworthy websites or using peer-to-peer file-sharing programs can expose your computer to viruses.
  • Removable Media: Viruses can spread through infected USB drives or other removable media. Once a virus is executed, it can perform various malicious actions, such as:
  • Data Corruption: Viruses can alter or delete your files and data.
  • System Disruption: They can slow down your computer, crash it, or render it unusable.
  • Data Theft: Some viruses are designed to steal personal information, including login credentials and financial data.
  • Botnets: Viruses can be used to turn infected computers into part of a botnet, controlled by cybercriminals for various illegal activities.

3. Recognizing Signs of a Computer Virus

Common signs of a computer virus infection include:

  • Slow Computer Performance: A sudden decrease in computer speed and performance.
  • Frequent Crashes: Frequent system crashes or freezes.
  • Unexpected Pop-up Messages: Unusual pop-up messages or error alerts.
  • Unusual Network Activity: Suspicious network activity or excessive data usage.
  • Changes to Files: Unexplained changes to files or file names.

4. Protecting Your Computer from Viruses

To protect your computer from viruses, follow these best practices:

  • Install Antivirus Software: Use reputable antivirus software and keep it up to date. It can detect and remove viruses.
  • Enable Firewalls: Use firewalls to filter incoming and outgoing network traffic, blocking potentially harmful data.
  • Keep Software Updated: Regularly update your operating system and software to patch security vulnerabilities.
  • Exercise Caution with Email: Avoid opening email attachments or clicking on links in emails from unknown or suspicious sources.
  • Download Carefully: Only download files and software from trusted websites.
  • Use Strong Passwords: Create strong, unique passwords to protect your accounts from being compromised.
  • Backup Your Data: Regularly back up your data to an external source. This can help recover your files in case of infection.
  • Educate Yourself: Stay informed about the latest security threats and safe online practices.

5. What to Do If Infected

If you suspect your computer is infected with a virus:

  • Isolate the Computer: Disconnect it from the network/internet and isolate from any other devices to prevent the virus from spreading.
  • Run Antivirus Software: Scan your system with updated antivirus software to identify and remove the virus.
  • Seek Professional Help: If the infection is severe, seek help from a professional computer technician or cybersecurity expert.

Understanding what computer viruses are, how they work, and how to protect your computer is essential for maintaining a secure and functional system. Regularly updating your security software and practicing safe online habits are key to reducing your risk of virus infections.