We attempt to create reliable rules no matter what language we see, however, it is more difficult to do that in foreign languages. We are working on upgrades to our internal systems and procedures to address this. None the less there are usually things within these messages that we can tag and if we can identify them then we do create rules for those items.

That said, we can create custom black rules for you if there is a specific need.  Send us an email at support@armresearch.com and we will work with you to create the needed rules.