Did Soviet Spies in Germany Tip Off Stalin To Barbarossa?

[Neckartailfingen451]

History books relate that Stalin had been tipped off by spies that Germany would attack the Soviet Union in June 1941. He didn't believe the warnings, considering them dezinformatsiya. Two highly placed Soviet Spies within the top level of the Germany government were codenamed Starshina and Korsikanets. Who were these individuals or were they a network or did they exist at all?

[Hannover]

Excellent question. Though one would think that Barbarossa preparations would have inevitably been noticed. After all, the Germans knew the Soviets were making preparations to invade Germany, hence the need for the pre-emptive attack by Germany.

- Hannover

[Mortimer]

History books relate that Stalin had been tipped off by spies that Germany would attack the Soviet Union in June 1941. He didn't believe the warnings, considering them dezinformatsiya. Two highly placed Soviet Spies within the top level of the Germany government were codenamed Starshina and Korsikanets. Who were these individuals or were they a network or did they exist at all?

Soviet spies in Germany definitely existed. http://en.wikipedia.org/Rote_Kapelle
It's true that Stalin was tipped off that Barbarossa was in preparation. But according to Igor Bunich it is also true that Hitler was tipped off about Operation Thunderstorm (Operatsiya Groza) which was the code name for the Soviet invasion of Germany. If you look at the following article there is info about a conversation between the German intelligence chief Schellenberg and the Soviet ambassador to Germany Dekanosov where over drinks the former admitted he knew about Operation Thunderstorm (Operatsiya Groza) and the latter admitted he knew about Operation Barbarossa. Moreover, plans for Operation Thunderstorm (Operatsiya Groza) went into preparation in September 1940 while Operation Barbarossa plans didn't begin until December 1940. Igor Bunich has written about this in his book on the planned Soviet attack which so far is only available in Russian language. It would be good if a revisionist publisher could get out a copy in English as soon as possible.
http://en.wikipedia.org/wiki/Igor_Bunich