computer viruses and security and preventive measures
0 likes13 views
The document discusses computer viruses, their characteristics, methods of spread, and preventive measures for individuals and organizations. It highlights various types of viruses, including ransomware, worms, and trojan horses, and emphasizes the importance of antivirus software and employee training for cybersecurity. Additionally, it explores the role of artificial intelligence in virus detection and prevention, with a case study on the 2017 WannaCry ransomware attack.
computer viruses and security and preventive measures
- 2. COMPUTER VIRUS A COMPUTER VIRUS IS A MALICIOUS SOFTWARE PROGRAM DESIGNED TO DISRUPT, DAMAGE, OR GAIN UNAUTHORIZED ACCESS TO COMPUTER SYSTEMS. • Named after biological viruses due to their ability to replicate and spread. • First virus: "Creeper" in the 1970s.
- 3. Computer viruses can replicate themselves and spread from one file or system to another without user intervention. Once activated, viruses execute harmful actions, such as deleting files, stealing data, or disrupting system operations. They often remain dormant until specific conditions, such as a date or a file being opened, are met Viruses use advanced methods like encryption and code obfuscation to avoid being detected by antivirus software. CHARACTERISTICS OF VIRUS
- 4. Attach themselves to executable files and spread when the file is run. File Infector Virus Target macros in applications like Microsoft Word or Excel. Macro Virus Infects the boot sector of a storage device. Boot Sector Virus TYPES OF VIRUSES
- 5. Encrypts user data and demands payment for its release. Ransomware Self-replicating programs that spread across networks without user action. Worms Disguise themselves as legitimate programs but perform malicious activities. Trojan Horse TYPES OF VIRUSES
- 6. Signs of Virus Infection • Slow computer performance. • Frequent crashes or error messages. • Unusual pop-ups or advertisements. • Unauthorized data access or deletion.
- 7. METHODS OF SPREAD Email Attachments: Fake messages containing malicious files. Removable Media: USB drives and external hard drives. Infected Downloads: Software or media from untrusted sources.
- 9. Individual-Level Security • Install and update antivirus software. • Regularly update operating systems and software. • Avoid clicking unknown links or downloading from untrusted sources
- 10. Organization-Level Security • Use firewalls to monitor network traffic. • Train employees about phishing and cyber threats. • Regular data backups and disaster recovery plans.
- 11. Advanced Security Solutions • Two-Factor Authentication (2FA). • Virtual Private Network (VPN). • Encryption for sensitive data. • Security training for employees.
- 13. A.I IN DETECTING VIRUS Machine Learning: Flags abnormal system behavior Anomaly Detection: Spot new, unknown viruses Real-Time Monitoring: Scans for threats continuously
- 14. A.I IN PREVENTING VIRUS Automated Response: AI blocks or isolates threats Predictive Analysis: Forecasts virus outbreaks Adaptive Security: Adjusts to new virus types
- 15. CASE STUDY WannaCry Ransomware Attack • It occurred in 2017, affecting over 200,000 systems globally. • Exploited a vulnerability in Microsoft Windows. • Demanded payment in Bitcoin for file decryption.
- 16. CONCLUSION • Stay informed about threats. • Regularly update and protect systems. • Adopt safe online practices. “ An ounce of prevention is worth a pound of cure."
- 17. THANK YOU