If you feel you need one, there are several free anti-malware apps available on the markets. I'm using Lookout on mine with no apparent performance issues. Another popular one is AVG Antivirus Free.
Here is list of android security apps. You can find on Google play store as per your needs.
>Lookout Security & Antivirus
>Mobile Threat Tracker
>Plan B
>Zapper Task Killer by Lookout.
Hm, I'm really surprised Linux-based software is vulnerable to hackers, but thanks for posting the article any way. Now I need to do some further reading.