Madhu Devi ppt(computer virus and its management).pptx
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A computer virus is a type of program that replicates itself by modifying other programs and inserting its own code. The first computer virus, called 'Creeper', was created in 1971. There are different types of viruses like resident viruses, macro viruses, boot sector viruses, and email viruses. Resident viruses remain in RAM and infect files. Macro viruses are embedded in documents. Boot sector viruses target the boot sector or MBR of storage devices. Email viruses intentionally spread using email. To manage viruses, one should install antivirus software, keep it and the OS updated, secure the network, be cautious of clicks and attachments, backup files, and use strong unique passwords.
Madhu Devi ppt(computer virus and its management).pptx
- 1. B.ed First Year Session 2020-22 EPC 3-Criticial understanding of ICT Name: Km.Madhu Devi Roll Number#2059
- 2. Computer Virus and its management
- 3. Overview What is computer Virus & its historical prospective? What are its various types? How does it impact us? How can we manage it?
- 4. A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code. If this replication succeeds, the affected areas are then said to be "infected" with a computer virus.
- 5. The first computer virus, called "Creeper system", was an experimental self- replicating virus released in 1971. It was filling up the hard drive until a computer could not operate any further. This virus was created by BBN technologies in the US. The first computer virus for MS-DOS was "Brain" and was released in 1986.
- 6. Resident vs. non-resident viruses Macro viruses Boot sector viruses Email virus
- 7. A memory-resident virus (or simply "resident virus") installs itself as part of the operating system when executed, after which it remains in RAM from the time the computer is booted up to when it is shut down. Resident viruses overwrite interrupt handling code or other functions, and when the operating system attempts to access the target file or disk sector, the virus code intercepts the request and redirects the control flow to the replication module, infecting the target
- 8. A macro virus (or "document virus") is a virus that is written in a macro language and embedded into these documents so that when users open the file, the virus code is executed, and can infect the user's computer. This is one of the reasons that it is dangerous to open unexpected or suspicious attachments in e-mails
- 9. Boot sector viruses specifically target the boot sector and/or the Master Boot Record (MBR) of the host's hard disk drive, solid-state drive, or removable storage media (flash drives, floppy disks, etc.).
- 10. Email viruses are viruses that intentionally, rather than accidentally, uses the email system to spread. While virus infected files may be accidentally sent as email attachments, email viruses are aware of email system functions. They generally target a specific type of email system (Microsoft Outlook is the most commonly used), harvest email addresses from various sources, and may append copies of themselves to all email sent, or may generate email messages containing copies of themselves as attachments
- 11. Install Anti-Virus/Malware Software. Keep Your Anti-Virus Software Up to Date Run Regularly Scheduled Scans with Your Anti-Virus Software. Keep Your Operating System Current. Secure Your Network. Think Before You Click. Keep Your Personal Information Safe. Don’t Use Open Wi-Fi. Back Up Your Files. Use Multiple Strong Passwords.
- 12. Thanks and Regards : Km.Madhu Devi B.Ed First Year Roll# 2059