Board Thread:Lore Discussion/@comment-30011802-20170217032502/@comment-26893431-20170325174153

Terawolf119 wrote: Maybe becuase spies are usally well hidden, and do you expect the Thalmor to have just 2 spies? Regardless of how "well hidden" they are, there are records about them. Either by their master or on themselves.

We only know of Thalmor spies in Skyrim, anything else is unconfirmed speculation.