Confidence in Krakow has a few interesting talks. Especially the GSM/Cell Networks and telephony security by Don Bailey and Nick DePetrillo - this should be the stuff from SourceBoston. Android Reverse Engineering - Workshop by Jesse Burns. Mobile attacks and preventions - how security will change the mobile market by Tam Hanna. And The Four Horsemen - Malware for mobile by Axelle Apvrille.
I'm seriously considering going there.