Viruses S.1

 A computer virus is a type of malicious software (malware) that can spread between computers and cause damage to data and software. The goal of a computer virus is to disrupt systems, cause major operational issues, and result in data loss and leakage. 

The common kinds of computer viruses are:
1. File Infector Viruses:
Infect executable files (.exe, .com, .dll) by attaching themselves to the code of legitimate

 programs. Examples: Cascade, CIH, Sasser.

2. Boot Sector Viruses:
Infect the master boot record (MBR) or boot sector of storage devices, 

enabling them to execute before the operating system loads.
Examples: Stoned, Michelangelo.

3. Macro Viruses:
Written in macro language and embedded within documents (e.g., Word, Excel) 

and spreadsheets.
Spread through infected documents when opened with compatible software.
Examples: Melissa, Concept.

4. Polymorphic Viruses:
Employ encryption and code mutation techniques to change their appearance 

with each infection.
Evade detection by antivirus software that relies on signature-based detection methods.
Examples: Elk Cloner, Storm Worm.

5. Multipartite Viruses:
Infect both executable files and boot sectors, combining characteristics 

of file infector and boot sector viruses.
May spread through multiple means, making them more challenging to 

detect and remove.
Examples: Tequila, Invader.

6. Memory Resident Viruses:
Reside in computer memory (RAM) after activation, allowing them to infect files 

and applications as they are opened or executed.
Examples: CMJ, ZMist.

7. Worms:
 Self-replicating malware that spreads across networks and systems independently, 

without requiring user interaction.
Exploit security vulnerabilities to propagate rapidly and may carry payloads 

for various malicious activities.
Examples: Morris Worm, Conficker.

8. Trojan Horses:
Disguise themselves as legitimate software or files to trick users into executing them.
Once activated, perform unauthorized actions, such as data theft, system damage, or 

remote control by attackers.
Examples: Sub7, Zeus.

9. Ransomware:
Encrypts files or locks down systems, demanding ransom payments from 

victims in exchange for decryption keys or restored access.
May spread through email attachments, malicious websites, or exploit kits.
Examples: WannaCry, CryptoLocker.

10. Adware and Spyware:
Adware displays unwanted advertisements, pop-ups, or banners to generate 

revenue for attackers.
Spyware secretly collects sensitive information, such as keystrokes, browsing 

habits, or personal data, for malicious purposes.
Examples: CoolWebSearch, Zango.

User manual

A user manual, also known as a user guide, instruction manual, or owner's manual, 

is a document that provides detailed information and instructions on how to use, 

operate, maintain, or troubleshoot a product or system. User manuals are typically 

provided by manufacturers or developers alongside the product or software to

 assist users in maximizing its functionality and ensuring safe and efficient usage.

Key components of a user manual include:

1. Introduction: Provides an overview of the product or system, its purpose, and 
2. any important disclaimers or safety precautions.
3. Getting Started: Offers step-by-step instructions for setting up or installing the
4.  product, including any required hardware or software configurations.
5. Operating Instructions: Provides detailed guidance on how to use the product, 
6.  including its features, functions, and controls. This section often includes 
7. illustrations, diagrams, or screenshots to aid comprehension.
8. Maintenance and Care: Offers recommendations for proper maintenance,
9.  cleaning, and care of the product to ensure optimal performance and longevity.
10. Troubleshooting: Includes a troubleshooting guide with common problems and
11.  their solutions, as well as instructions for performing basic diagnostics or 
12.  troubleshooting steps.
13. Technical Specifications: Provides technical specifications and details about 
14.  the product's hardware, software, compatibility, and any other relevant information.
15. Warranty and Support: Outlines the product's warranty terms and conditions, 
16. as well as information on obtaining support or assistance from the manufacturer
17.  or authorized service providers.

User manuals are essential resources for users to reference when encountering difficulties or seeking

 guidance on how to utilize a product effectively. Well-written and comprehensive user manuals

 contribute to a positive user experience and can reduce frustration or confusion associated with product usage

QN

study the user manual and identify

1. the tool which user manual was mafe?
2. list if specifications

1. safety precautions of the device