Those are two warnings from the "", which says that mobile application markets are a haven for malware.
Exploits of mobile operating systems will go from 18 in 2009 to about 35 by the end of 2011, the report says, as the number of vulnerabilities will go from about 65 to more than 180 over the same period.
"The first half of 2011 saw an increased level of malware activity targeting the latest generation of smart devices, as attackers are finally warming to the opportunities these devices represent," the new report says.
The report uses Android devices as an example, and notes that since the operating system is open, many developers write applications to it. Some of these apps are malicious, so users should be careful which ones they choose and where they get them from. "One of the most popular and effective ways to distribute Android malware is through application markets. Besides Google's own official market, there are many unofficial third-party markets," the report says.