So would be more than interesting to know what you are using to send email and or website and are you having this issue in any other program on the net or your system ?

It is Cyrillic it can happen when system fonts get corrupted or program fonts or registry issues. There is all so virus.

At this time you can check for virus/malware but need more info please.

Please use more than 1 scanner as each uses diff tech : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware Save your Report and google each before deleting anything as do not want to delete something you need, If need help : https://forums.malwarebytes.com/topic/9573-im-infected-what-do-i-do-now/ Post in only 1 forum, then wait.

can eliminate Registry issues , reboot after

Repair System Registry and Files

(FOR DOING Above & Below - WINDOWS All OTHER VERSIONS - Use Search To Find Command Prompt ** Enter CMD.exe to Find COMMAND PROMPT Then Right Click & RUN AS ADMIN)

To run the SFC command use the Windows key + X keyboard shortcut to open the Power User menu and select Command Prompt (Admin). Type "SFC /SCANNOW" (without quotes or copy/paste) and press Enter. For more information on using SFC, please refer to the Microsoft KB: Use the System File Checker tool to repair missing or corrupted system files

Run the Windows Deployment Image Servicing and Management (DISM) and System File Checker (SFC) tools as Administrator. The DISM and SFC tools scan the integrity of the Windows image and all protected system files replaces corrupted, damaged and incorrect versions. (FOR DOING Above & Below - WINDOWS All OTHER VERSIONS - Use Search To Find Command Prompt ** Enter CMD.exe to Find COMMAND PROMPT Then Right Click & RUN AS ADMIN) Type "DISM /Online /Cleanup-Image /RestoreHealth" (without quotes or copy/paste) and press Enter.

Windows 10 To run the DISM command use the Windows key + X keyboard shortcut to open the Power User menu, then select Command Prompt (Admin). Type "DISM /Online /Cleanup-Image /RestoreHealth" (without quotes or copy/paste) and press Enter. Reboot After.

Note : SFC fixes files locally using files found on your system. Note : DISM goes up to Microsoft for new ones.

Please let us know if this solved your issue or if need further assistance.

This usually means that an Unicode character is shown as its combining characters and not as the real character.

• � = FFFD (REPLACEMENT CHARACTER)

You can check the Text Encoding (View -> Text Encoding) to make sure that Unicode is selected and not an 8-bit Windows or Western encoding.

See also:

• https://www.digitalbyzantinist.org/2014/06/17/the_mystery_of_the_character_encoding/
• http://www.i18nqa.com/debug/utf8-debug.html

• http://www.utf8-chartable.de/unicode-utf8-table.pl?start=65280&utf8=char

Unicode is selected at View > Text Encoding.

I just got this email reply so it is still inserting the mystery characters:

Take care.� At some point I might call you to see how everything is going.� Have a great Christmas.

Can you help stop this?