SecurStar did it again in 2006 there was RexSpy and in 2010 we have this mobile phone crypto comparison. But the knowledgeable community is big enough to identify and point out this kind of advertising/scam fast enough.
Conferences, the only interesting talk I found is: iPhone Privacy by Nicolas Seriot at Black Hat DC this week.
In other news, I still need a Nexus One. It is still not available to buy out side of the US. *ARG*
Updated (Feb 2nd):
Something from a few days ago: iPhone PKI handling flaws