Fighting trojans and other malware with so-called "anti-virus" apps. If your question rather is about some piece of malware itself, use the 'malware' tag instead.
Though there is not any known virus for Android, creators of anti-malware apps tend to call their solutions "Anti-Virus". There are several such anti-virus apps available for Android -- and this tag is for any issues you might have with any of them.
- malware: for questions concerning malware (trojans etc.) itself
Recommended readings on our site
- How do anti-virus apps for Android work? (Security.SE)