found this insightful

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TOP OF THE NEWS
 --FBI and DHS Concerned About Android Vulnerabilities
(August 26, 2013)
According to an unclassified US government document, the FBI and the
Department of Homeland Security (DHS) are concerned about security flaws
in the Android operating system. Specifically, the document outlines
concerns about threats faced by law enforcement officers and officials
who are using devices running older versions of the operating system.
The document says, "Android is the world's most widely used mobile
operating system and continues to be a primary target for malware
attacks due to its open source architecture." It also offers mitigation
advice for certain types of threats.
http://news.cnet.com/8301-1009_3-57600105-83/android-security-holes-worry-fbi-dhs/
http://info.publicintelligence.net/DHS-FBI-AndroidThreats.pdf
[Editor's Note (Murray):  Ironic.  DHS has favored Android over iOS for
exactly this reason.  That the government has consistently used its
buying power to favor "open" over "secure" is at least partially