Notice of Discontinuing the Use of Password-Protected Compressed Files

We have decided to completely discontinue the use of password-protected compressed files as of December 31, 2024.
After this date, we will no longer be accepting emails with password-protected compressed files attached.
Please consult with our staff regarding future data transfers.

We apologize for any inconvenience this may cause and appreciate your understanding and cooperation as we continue our efforts to strengthen information protection.

Implementation Date
December 31, 2024

Background of This Action
Password-protected compressed files, while encrypted, are difficult to detect malware.
In addition, cyber-attacks such as “Emotet,” which have been on the rise recently, have been reported to exploit these file formats.
Many organizations are also moving to stop using password-protected compressed files in order to avoid the risk.

Against this background, we have decided to take this action in order to further improve our information security.