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E-mail Attachments You Should Never Open Regardless of Where They Came From

Updated: November 27, 2017 2017-11-27T21:02:26 - Posted: February 12, 2013 - Views: 15,756 - Comments: 5  +
E-mail Attachments You Should Never Open Regardless of Where They Came From
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Below is a list of file extensions belonging to e-mail attachments, which you should never open, regardless of where they came from, or who sent them. A malicious e-mail attachment is one of the most effective and easiest methods of infecting a computer. Always check the file extension of an e-mail attachment, because cyber-criminals can disguise an attachment as a Microsoft Word document, PDF document, or other legitimate documents. Attachments ending with ".zip", ".rar", ".7z", "r01", ".iso", and ".tar" are compressed files that should not be open if the sender is unknown to you, or you were not expecting the email message.

Please continue below.

Here are the e-mail attachments and their extensions that you should never open regardless of where they came from:

File Extension and Description

  1. .JAR -- Java archive
  2. .ACE -- Zip archive
  3. .7Z -- Zip archive
  4. .R01 to .R25 -- Zip archive
  5. .TAR -- Zip archive
  6. .ISO - Image file
  7. .BIN - Image file
  8. .SCR -- Windows Screen Saver
  9. .BAT -- Batch File Windows
  10. .CMD -- Command Script Windows
  11. .COM -- Command File Windows
  12. .COMMAND -- Terminal Command Mac OS
  13. .CSH -- C Shell Script Mac OS, Linux
  14. .EXE -- Executable Windows
  15. .JSE -- JScript Encoded File Windows
  16. .KSH -- Unix Korn Shell Script Linux
  17. .LNK -- File Shortcut Windows
  18. .MSC -- Microsoft Common Console Document Windows
  19. .MSI -- Windows Installer Package Windows
  20. .MSP -- Windows Installer Patch Windows
  21. .MST -- Windows Installer Setup Transform File Windows
  22. .OSX -- Executable Mac OS
  23. .OUT -- Executable Linux
  24. .PIF -- Program Information File Windows
  25. .PS1 -- Windows PowerShell Cmdlet Windows
  26. .REG -- Registry Data File Windows
  27. .RGS -- Registry Script Windows
  28. .RUN -- Executable Linux
  29. .SHB -- Windows Document Shortcut Windows
  30. .SHS -- Shell Scrap Object Windows
  31. .VB -- VBScript File Windows
  32. .VBE -- VBScript Encoded Script Windows
  33. .VBS -- VBScript File Windows
  34. .VBSCRIPT -- Visual Basic Script Windows
  35. .WS -- Windows Script Windows
  36. .WSF -- Windows Script Windows

Please share with us what you know or ask a question about this article by leaving a comment below. Also, check the comment section below for additional information, if there is any.

Remember to forward suspicious, malicious, or phishing email messages to us at the following email address: info@onlinethreatalerts.com

Also, report scams, untrustworthy, or fraudulent websites to us. Tell us why you consider the websites untrustworthy or fraudulent.

If you want to quickly find answers to your questions, use our search engine.

Comments, Questions and Reviews
(Total: 5)

To help protect your privacy, please do not post or remove, your full name, telephone number, email address, username, password, account number, credit card information, home address or other sensitive information in or from your comments, questions, or reviews.

The comments or reviews below do not necessarily reflect the views of Online Threat Alerts.

  • Posted: Dec 8, 2016 by an anonymous user from or near: Uyo, Akwa Ibom State, Nigeria

    Thanks. But are these two websites genuine or scam: www.iraisers.org and www.ecooperative.online.

    delete


  • Posted: Oct 27, 2014 by an anonymous user from or near: Fresno, California, United States

    Yah, just got a notice to appear. I am glad I researched the internet, no wonder the library computer would not let me open the attachment.

    Library computers don't allow one to open an e-mail attachment with an exe. extension, though there are a few legit files with EXE extensions, such as a game emulator for arcade games, now if they would only design a game emulator program with a different extension!

    delete


  • Posted: Jun 10, 2014 by an anonymous user from or near: Weirton, West Virginia, United States

    I have a question...I have received several "failure to appear hearing notices" - I have read the first part by clicking on it but when I clicked on the attachment my phone would not let me open the zip file - so am I safe or am I at risk since I did Try to open it?

    delete


    • Posted: Jun 10, 2014 by info

      The attachment is a malicious Microsoft Windows operating system file, and will only infect computers running this operating system.

      So, your phone will not be affected. But, never attempt to open these attachments, even on your mobile device.

      delete


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