Quelles sont les types des logiciels malveillants ?

Summary of the Article: Types of Malware

1. Malware Classification: There are various types of malware that can pose a threat to computer systems. Some of these include:

• Virus: A type of malware that can replicate and spread from one system to another.
• Ransomware: Malware that encrypts files and demands a ransom for their release.
• Scareware: Deceptive software that tricks users into believing their system is infected and prompts them to purchase fake security software.
• Spyware: Malware that secretly monitors a user’s activities and gathers sensitive information.
• Trojan: A type of malware that disguises itself as legitimate software and allows unauthorized access to the system.
• Adware: Software that displays unwanted advertisements on the user’s system.
• Fileless malware: Malware that resides only in memory and doesn’t leave traces on the system’s hard drive.

2. Two Major Types of Spyware: Among the different types of malware, spyware can be categorized into two major families:

1. Keyloggers: Spyware that records keystrokes on the user’s system. This helps attackers gain access to sensitive information, such as passwords and credit card details.
2. Adware: Spyware that displays advertisements on the user’s system based on their browsing habits.

3. Various Types of Computer Viruses: Computer viruses can also fall into different categories. Some notable types include:

• Boot sector virus: Infects the system’s boot sector and spreads when the infected system is booted.
• Web script virus: Targets websites and exploits vulnerabilities in web scripts.
• Browser hijacker: Takes control of the user’s browser and redirects them to malicious websites.
• Resident virus: Stays in the computer’s memory and infects files when they are accessed or executed.
• Direct action virus: Infects files when specific conditions are met, such as opening an infected file.
• Polymorphic virus: Can change its code to avoid detection by antivirus software.
• File infector virus: Infects executable files, allowing it to spread to other systems.
• Multipartite virus: Infects both the boot sector and executable files.

4. Malicious Software: Trojan

Trojans are malicious software that disguises itself as harmless programs. They can be activated by clicking on email attachments, for example. Trojans are extremely discreet and can install backdoors or keyloggers on your computer.

5. Impact of Malware: Malware can modify browser settings, including the homepage, and can also extract private and personal information incompletely.

6. Malicious Websites: Malicious websites attempt to install malware or viruses on users’ computers, which can compromise productivity or give hackers access to sensitive information like login credentials or banking details.

7. Most Dangerous Malware: Emotet Virus

The Emotet virus is considered one of the most dangerous malware ever created. After a four-month absence, it has resurfaced, posing a significant threat to computer systems.

8. Difference Between Virus and Malware: Malware is a broad term that encompasses all programs or code intended to damage a computer, network, or server. A virus is a specific type of malware.