However, for most of the file types above, there’s just no securing them.
PDF – that have had a string of security problems. There are other types of file extensions – like. The M at the end of the file extension indicates that the document contains Macros.
SLDM – New file extensions introduced in Office 2007. PPT – Microsoft Word, Excel, and PowerPoint documents. REG file could remove important information from your registry, replace it with junk data, or add malicious data. REG – A Windows registry file.REG files contain a list of registry entries that will be added or removed if you run them. If run, this file could potentially launch dangerous applications it came with or pass dangerous options to programs included with Windows.
(There have been some cases where a maliciously crafted image or other media file can exploit a vulnerability in a viewer application, but these problems are rare and are patched quickly.) MP3 music files – are not dangerous because they can’t contain code.
exe file is potentially dangerous because it’s a program that can do anything (within the limits of Windows’ User Account Control feature). These file extensions are potentially dangerous because they can contain code or execute arbitrary commands. Why is a File Extension Potentially Dangerous? Obviously you should always have your anti-virus software running and active, and protecting you in the background - but knowing more about some uncommon file extensions can be useful in preventing something bad from happening. Scan with your preferred anti-virus product, or even upload it to a service like VirusTotal to make sure that there aren’t any viruses or malware. When you encounter one of these files, you should take extra care to make sure that you are protected. Even screen saver files can be dangerous on Windows. Repeat steps 2-4 for each location listed in Location of My Picutre.SCR and Associated Malware. Click Yes in the confirm deletion dialog box. Select the file and press SHIFT+Delete on the keyboard. It’s important to know which file extensions are potentially dangerous when deciding whether a file attached to an email or downloaded from the web is safe to open. Using your file explorer, browse to the file using the paths listed in Location of My Picutre.SCR and Associated Malware. The virus injects its own code into a system process such as ' explorer.exe ' or ' winlogon.exe ', and hooks low-level ( NTDLL layer) Windows API calls in. So Why Would I Want to Know Which Files are Dangerous? SCR files, hence actions such as copying or viewing files with Explorer, including on shares (with write access) will result in files being infected, and the virus spreading from PC to PC.