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What file types can contain viruses?

Author

Emily Carr

Published Mar 05, 2026

What file types can contain viruses?

File Virus

File viruses are commonly found in executable files such as .exe, . vbs or a .com files. If you run an executable file that is infected with a file virus, it can potentially enter your computer's memory and subsequently run your computer.

Besides, what kind of files can spread viruses?

File Virus

File viruses are commonly found in executable files such as .exe, . vbs or a .com files. If you run an executable file that is infected with a file virus, it can potentially enter your computer's memory and subsequently run your computer.

Beside above, can viruses be in mp4 files? Yes, MP4 files can have a virus or malware code. If the files contain it, it means your media player might already be compromised. It's either it can read and execute the code or the videos will not play at all.

Also know, what file type contains malware?

Resolution. File attachments in email are common threat vectors for malware. Executable files are not the only file type that can include threats. For example, Microsoft Office documents (e.g. doc, docx, xlx, xlsx, ppt, pptx, etc) can contain macros or scripts that include threats.

Can picture files contain viruses?

JPEG files can contain a virus. However, for the virus to be activated the JPEG file needs to be 'executed', or run. Because a JPEG file is an image file the virus won't be 'released' until the image is processed.

What are the top 5 computer viruses?

The Top 10 Worst Computer Viruses in History
  • Klez – $19.8 billion.
  • ILOVEYOU – $15 billion.
  • WannaCry – $4 billion.
  • Zeus – $3 billion.
  • Code Red – $2.4 billion.
  • Slammer – $1.2 billion.
  • CryptoLocker – $665 million.
  • Sasser – $500 million. The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan.

Are all files that end in .exe viruses?

They are mostly setups of Windows programs. Not all of them are viruses. It is even possible that the exe file is of a nice software, but a virus is contained in an attached file. So, you should make sure the file you are gonna execute is from a trusted source and is scanned using a latest antivirus before use.

Can you backup a virus?

The good news is viruses are always programs, and she'd have to run a program to get infected. Occasionally a data file can contain a virus, but it's rather unlikely. Backups don't typically include programs, just the user's unique files, so she probably is not backing up viruses.

What are the common signs of a virus attack?

Computer virus symptoms
  • Unusually slow performance.
  • Frequent crashes.
  • Unknown or unfamiliar programs that start up when you turn on your computer.
  • Mass emails being sent from your email account.
  • Changes to your homepage or passwords.

How can you prevent viruses?

Apply recognised hygiene measures
  1. Always keep your hands clean.
  2. Follow tips for Coughing and sneezing without contaminating.
  3. Avoid touching your nose, eyes and mouth with unwashed hands.
  4. Avoid touching your nose, eyes and mouth.
  5. Avoid contact with people that are sick as they may be contagious.

Can a TIFF file contain a virus?

TIF has been around for ages, but I think there isn't a single verified case of a TIF file actually being a virus. The well known ability to hide information or even hidden instructions in a valid image (think steganography) is pointless and potentially misleading to discuss in terms of virus in actual tif files.

How do you know if there's a virus in your computer?

If you notice any of the following issues with your computer, it may be infected with a virus:
  1. Slow computer performance (taking a long time to start up or open programs)
  2. Problems shutting down or restarting.
  3. Missing files.
  4. Frequent system crashes and/or error messages.
  5. Unexpected pop-up windows.

Which files are dangerous?

What are the four most dangerous file types?
  1. ZIP and RAR Files. Cybercriminals love to hide malware in files.
  2. Microsoft Office Documents. Microsoft Office files, all Word documents (DOC, DOCX), Excel spreadsheets (XLS, XLSX, XLSM), presentations and templates are also very popular with cybercriminals.
  3. PDF Files.
  4. IMG and ISO Disk Images.

Is BAT file a virus?

bat virus is a malicious cyber infection classified as a Trojan horse. PC users can download it by clicking on a malicious ads, downloading drive. zip file, opening spam e-mails or file-bundles. Trojan can be utilized with a help of an updated and powerful anti-malware tool.

Why .EXE files are dangerous?

Why is a File Extension Potentially Dangerous? These file extensions are potentially dangerous because they can contain code or execute arbitrary commands. An .exe file is potentially dangerous because it's a program that can do anything (within the limits of Windows' User Account Control feature).

Can I delete Wscript EXE?

The executable wscript.exe is not a malicious file (not a virus, worm, Trojan Horse, etc.). It's part of Windows. Generally speaking, it's a bad idea to delete operating system files.

Which file type is safe to open?

Microsoft has classified several types of dangerous extensions; however, only a few are considered safe. These are GIF, JPG or JPEG, TIF or TIFF, MPG or MPEG, MP3 and WAV.

Are .msi files safe?

The danger: Since MSI files are usually trustworthy and commonly used for software installations, it can be difficult to spot malicious files. This provides an optimal doorway for viruses to be delivered and installed on your computer.

Why is a .ZIP file dangerous?

Zip files by themselves are not harmful or dangerous. However, they have been used by malicious individuals to hide the fact that they are sending harmful files.

What .exe means?

The .exe file extension is short for “executable.” These files are most commonly used on Windows® computers to install or run software applications.

CAN PDF files have viruses?

Fortunately, those who are simply viewing a PDF, or Portable Document Format, file aren't vulnerable. The virus spreads only by way of Adobe's Acrobat software--the program used to create PDF documents--not through Acrobat Reader, the free program that is used to view the files.

Can a video have a virus?

Yet another vulnerability discovered in Android offers a glimpse at what's possible in the distribution of video malware. The vulnerability in Android versions 7–9 (Nougat, Oreo and Pie) could enable cybercriminals to execute code remotely via video-embedded malware.

Can you put a virus in a video?

Video files are not typically thought of as potentially malicious or infected file types, but it is possible for malware to be embedded in or disguised as a video file. Due to this common misconception, audio and video files are intriguing threat vectors for malware writers.

Can you get a virus from watching a video?

While it's unlikely you'll ever get a YouTube virus from watching videos, real dangers exist on the site. Cyber criminals trick us into clicking links so they can install malicious software on our devices. Keeping your devices safe from YouTube viruses means educating your kids on the dangers and warning signs.

Can a mp3 file have a virus?

"No. Mp3 or video files are not self executing programs but just data files, even if a virus puts its code inside them, they would stay harmless. If a virus alters such a file, it will most likely get corrupt and will not play or partially play in your media player software."

Can SRT files have viruses?

srt files could contain a virus and found that that was indeed the case with some . srt files which exploited a vulnerability in a media player when loaded.

Can a GIF contain a virus?

The simple answer is "no". The complete answer is more complex. JPEG format contains code that is executed by the viewer program.

Can a PNG file have a virus?

New trojan discovered hidden in PNG images - undetectable by browsers and anti-virus software. pdf's can be riddled with all sorts of exploits/viruses, etc. Many will be exploited by older versions of Acrobat, but something like Foxit reader will display the . pdf without doing diddly with the virus.

Are GIF files dangerous?

gif, and . png. 90% of the time these files are absolutely safe but sometimes they can be dangerous. Certain black hat hacking groups how found ways that they can sneak data and scripts inside of an image format.

Can JPG have malware?

JPG malware is not that common, but it can be very nasty. Attackers can target stock images that are common in powerpoint presentations and embed malicious code either using stegosploit or infect the site that hosts the stock images for slides.

Is it safe to download images?

Downloading photos is generally safe because the images do not have executable code. A more significant threat comes from executable programs masquerading as image files, a tactic used by some virus and malware authors to disguise their malicious creations.

Can WhatsApp images contain virus?

In short, it seems that yes, you can get a virus over WhatsApp. But how likely is it to happen to you? Sure, the rest of us may not have genuine princes in our contact lists. But since anyone could fall for a scam message, we're going to cover some tips to ensure you aren't next.

Can you hide a virus in a mp4?

Video files are not typically thought of as potentially malicious or infected file types, but it is possible for malware to be embedded in or disguised as a video file.

Are JPG safe to open?

jpg, . mp3, . mp4, . wav and other file extensions used by various image and video file formats are generally safe to open.