S. No 1. 2. Class: VII Computer Virus is a computer program that can spread across computers and networks by making copies of itself, usually without the user's knowledge. It can also modify other computer programs, inserts own code and change computer setting. • Your friend's system has be a victim of a virus attack. What THREE (03) advices will you give him/ her? 3. 1. 2. 3. WORM DANGER 4 SUMMER PACK Activity 04: Virus and Antivirus Antiviruses are utility softwares designed to protect computers from any potential threats of data or hardware loss. It is highly recommended that the user must install an antivirus on an operating system like MS Windows. • Mention any THREE (03) precautions, you should take for protecting your computer from virus infections. S. No Precautions for protecting computer from virus VIRUS Advices
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Verified answer
Answer:
precautions to be taken:
I) do not open files sent through mail by unknown ID's
ii)always have an anti virus software in your laptop,pc etc
do not enter websites which do not open in one click
Answer:
ok
Explanation:
A computer virus[1] is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs.[2][3] If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses.[4]
Hex dump of the Brain virus, generally regarded as the first computer virus for the IBM Personal Computer (IBM PC) and compatibles
Computer viruses generally require a host program.[5] The virus writes its own code into the host program. When the program runs, the written virus program is executed first, causing infection and damage. By contrast, a computer worm does not need a host program, as it is an independent program or code chunk. Therefore, it is not restricted by the host program, but can run independently and actively carry out attacks.[6][7]
Virus writers use social engineering deceptions and exploit detailed knowledge of security vulnerabilities to initially infect systems and to spread the virus. Viruses use complex anti-detection/stealth strategies to evade antivirus software.[8] Motives for creating viruses can include seeking profit (e.g., with ransomware), desire to send a political message, personal amusement, to demonstrate that a vulnerability exists in software, for sabotage and denial of service, or simply because they wish to explore cybersecurity issues, artificial life and evolutionary algorithms.[9]
Computer viruses cause billions of dollars' worth of economic damage each year.[10] In response, an industry of antivirus software has cropped up, selling or freely distributing virus protection to users of various operating systems.[11]
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