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Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article Steps. Tips and Warnings. Related Articles. Author Info Last Updated: January 2, Determine what operating system you are going to attack. The most common target is Microsoft Windows, especially older versions.
Many old Windows users do not update their operating system, leaving them vulnerable to security holes that may be fixed in newer versions. Mac OS X and Linux are both fairly virus-proof due to the way permissions work and the general architecture of the operating system.
Decide how you want it to spread. A virus is only a virus if it can spread to other users. You will need to figure out the delivery method before beginning, as it is one of the fundamentals of the virus's code. Common delivery mechanisms include: Executable file. COM etc. Macro Microsoft Office - Macros are programs that are embedded into a document or email. They target Word, Outlook, and other macro-enabled products. The most common method of delivery is via email with an infected document attached.
Web script - These are pieces of malicious code that are injected into sites without the webmasters' knowledge. Determine the weak spot that you want to target. Successful viruses exploit weak spots in a program's or system's security to spread and carry out their actions.
This requires a lot of research and know how, but there are communities out there that can help you find what you need. Decide what you want your virus to do.
Once your virus has infected a system, what do you want it to do? Classifications and Names of Worms. Files Sent as Email Attachments. The user clicks on a file attached to an email and the worm is activated. Through Network Packets. Monitor Speed and Performance. Be on the Lookout for Missing or New Files. Stay Protected Against Computer Worms. Be Extra Cautious Against Phishing.
Update Your Operating System. How Fortinet Can Help. What is a worm virus? How do computer worms work? How do worm viruses spread? Quick Links. Online Demo Explore key features and capabilities, and experience user interfaces. Resource Center Download from a wide range of educational material and documents. Free Trials Test our products and solutions. You will also receive an email with your download. The Motley Fool has a Disclosure Policy. Avast Business Antivirus Pro combines all the components of a strong antivirus and security suite with some awesome tools to secure the SMB environment.
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News Learn how the latest news and information from around the world can impact you and your business. Product Reviews Unbiased, expert reviews on the best software and banking products for your business. Quick Answers Short on time, high on curiosity? See Turn Microsoft Defender Firewall on or off for instructions on how to do that on modern versions of Windows. In the Search box, type firewall, and then click Windows Firewall. In the left pane, click Turn Windows Firewall on or off you may be prompted to enter your administrator password.
Only download programs from sites that you trust. If you're not sure whether to trust a program that you want to download, enter the name of the program into your favorite search engine to see whether anyone else has reported that it contains spyware. Read all security warnings, license agreements, and privacy statements that are associated with any software that you download. Never click "Agree" or "OK" to close a window that you suspect might be spyware.
Be wary of popular "free" music and movie file-sharing programs, and make sure that you understand all the software packaged with those programs. Use a standard user account instead of an administrator account. An administrator account can access anything on the system, and any malware run with an administrator account can use the administrator permissions to potentially infect or damage any files on the system.
For more information about how to protect a computer against viruses, see Protect my PC from viruses. Want to chat with a live person? Our Answer Tech trained professionals are ready to help: Answer Desk.
Security information and training. For computer virus and security-related support for locations outside North America, go to the Microsoft Support website.
This computer is infected by spyware and adware. Click Start , and then type Windows Update in the search box. In the results area, click Windows Update. Click Check for Updates. Follow the instructions to download and install the latest Windows Updates. Restart your computer. When you see the computer's manufacturer's logo, repeatedly press the F8 key. Click the Shortcut tab. Click Open File Location. Right-click the folder, and then click Delete. Click the Download Now button, and then click Run.
Follow the instructions to scan your computer and help remove the rogue security software. Click the Start button, and then click Control Panel. Need more help?
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