If download malicious file

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Some file extensions that cyber attackers would be delighted if you ran on your computer are: Files are the convention we use to organize data on computers. They contain human readable text, computer data, or computer executable code programs. These programs, if malicious, can be devastate a computer system or put it under the control of a bad guy.

Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Submit and view feedback for This product This page. To protect yourself, your computer, and your organization, the best option is to delete the file. From the OneDrive mobile app, your only option is to delete the file. If your organization allows it, you can download the file by viewing your OneDrive in a web browser.

You can then clean the file by whatever means your organization recommends. Can't sign in? See I forgot the username or password for the account I use with Office. Certain safety features are in place in Microsoft such that a malicious file can be identified in SharePoint in Microsoft , OneDrive for work or school, or Microsoft Teams.

If a file in SharePoint, OneDrive, or Microsoft Teams is deemed malicious, that file is blocked so that no one can open it. A blocked file has a marker after its file name, like this:. Although it can be inconvenient for a file to be blocked, getting infected with malware is even worse. Cybercriminals use ransomware , technical support scams , or unwanted software to compromise users and computers. Group of file extensions, which can be dangerous and harmful for your computer, but it may be also a regular program or data files.

You should run a virus scan before opening any unknown file type from this group. List of common possibly dangerous files. Malicious software , also known as malware , is an application or a file, which is harmful to the computer user. Malicious software includes computer viruses , worms , trojan horses , spyware , adware or rootkits. Computer virus - virus is a program or programming code, which replicates by being copied or initiating its copying to another program, computer boot sector or document.

Viruses can be transmitted as attachments to an e-mail note or in a downloaded file, or can be present on a diskette or CD.