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Gmail will soon block JavaScript file attachments to reduce malicious attacks

Gmail will soon block JavaScript files[1] from being uploaded and sent over email. Starting February 13th, you’ll no longer be able to attach .js files as they are increasingly being used as a form of malware. If a user downloads a malicious JavaScript file, hackers can use it to gain access to their PC to steal data or perform other damaging functions.

As reported by Android Police[2], JavaScript joins .exe, .bat, and .msc as file types that are restricted from being shared as a direct attachment on Gmail.

You won’t be able to get around hiding them in compressed forms, such as .zip, either.

If you must send a JavaScript file, you can use Google Drive or Google Cloud Storage instead.

Users will receive a warning when they attempt to upload a banned file type, but it is unclear whether they’ll get an alert as well if they’re on the receiving end of said file.

References

  1. ^ block JavaScript files (gsuiteupdates.googleblog.com)
  2. ^ Android Police (www.androidpolice.com)

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