Android Email Spam?

Terry Zink reports that a new botnet (an automated malicious program) lives only on Adroid devices, logs in to the user’s Yahoo Mail account and sends spam.

The actual spam itself is of a common variety, but Zink believes it's coming only from Android devices because all of the emails have the same footer and Message-ID:

Message-ID: <1341147286.19774.androidMobile@web140302.mail.bf1.yahoo.com>

To avoid such malicious apps, he suggests not downloading anything free, or at least sticking to the Android Marketplace.