At this time, the only extensions we have that are compatible with DW CS6 are Design Extender, Data Bridge and eCart 5.
If you need to use Security Assist 2 in DW CS6, I would strongly urge you to upgrade to Data Bridge which includes Security Assist.
we will be evaluating the stand alone extensions in the coming months for compatibility but with 30 extensions, it will take some time to go through them all.