How to protect Android app against theft and modification of app itself?

Question

There\'s a good report here of a recent scam perpetrated through the Android market.

http://www.theregister.co.uk/2011/12/12/android_market_malware/

Someone

Answer 1

This kind of black hat practice are impossible to avoid. Whatever you find, a lucky, ingenious, patient hacker will undo it.

You can nevertheless hope to work hard enough to make it harder for most hackers to easily break your protections. That's what people often call IT security btw :)

Fields to investigate are :

• obfscation
• CRCs and MD5 as you mentionned it
• secure networked verification
• a second app to check the first
• a custom checking class loader (can you do that on android ?)