Yeah, sorry about that.
Anyway, the Seawolf and Virginia classes are much quieter than the Akula and improved Akula. But the improved Akula did pose somewhat a threat in the early 1990’s when it was at parity or slightly quieter than the improved LA class.
After the fall of the Berlin Wall (thank you, President Reagan and allies), the Russians weren't much of a threat. This is just my take on things, but Russian priorities changed. Being a global naval power requires established logistics, well-trained sailors, and money to maintain and project that naval power. A lot of that broke down, as did much of their capability to continue their R&D and funding of new programs.
If anything, a rogue Akula (or one sold to a terrorist organization), could serve as a delivery system for an explosive device. Perhaps at very slow speeds, one could navigate such a sub into harbor somewhere--assuming you had potent enough explosives, and enough training to operate and navigate from wherever you originated. You'd still have to evade SOSUS lines, and other allied subs. If you were detected, the gig would be up.