An EXE file that I downloaded from the official website has an expired digital certificate signature (1999 to 2015) That is it has been expired for two years. Is it still safe to run the EXE? There is a MD5 hash given below it.
Edit 1: Link to EXE
This is the EXE that I have downloaded. I need a UNICODE converter. http://downloads.sil.org/EncodingConverters/SEC%204.0%20Web/SEC_PackageOnly.exe Can any of you tell me if it is safe?