Effective in version 9.6.0, you do not have to set umask to 000 when you configure operating system profiles.
Previously, you had to set umask to 000 to enable operating system profiles to access files written by the DTM.
If you upgrade from an earlier version, the umask setting is not changed. You can change the umask setting before or after you upgrade. For example, you can change umask to 077 for maximum security. If you change the umask setting after you upgrade, you must restart the Informatica services.