Germans and their intelligence failures

The Abwehr (German Intelligence) under Admiral Canaris was also crucial in feeding misinformation to the German High Command, also Canaris was passing secrets to the allies. Admiral Canaris was working against Hitler when he headed the Abwehr, it became so bad that whenever Hitler asks Canaris' advise on any plan of action, hitler usually does the opposite.
Canaris was upset on the execution of Ernst Rohm, his friend, and ever since vowed to go against the leader of the third reich. I do not know the connection, if any, between Canaris and the conspirators like Stauffenberg and his group if they were aware of each others existence and agenda.
Anyone care to comment?