UTR #36, Unicode Security Considerations and UTS #39, Unicode Security Mechanisms provide guidance and mechanisms to help deal with Unicode Security issues.

There are significant additions and changes in the new proposed updates of these specifications. The definition of Restriction Levels has moved from UTR #36 to UTS #39, which also adds two new conformance clauses and specifications for Restriction Levels and mixed number detection, an amended specification for mixed script detection, and updates for Unicode 6.1.

There are several of review notes requesting feedback on particular issues. Please submit feedback on those and the rest of this document by May 1 for consideration at the UTC meeting on May 7. For details, see:

http://www.unicode.org/review/pri208/

http://www.unicode.org/review/pri209/