Security firm Symantec is warning that more people may end up like Bitcoin user "Allinvain" and find their Bitcoin digital wallets pilfered by malicious hackers.

There is a new world order. MacDefender, and subsequently MacGuard, demonstrate that the inherent security by obscurity of the Mac is fading, and that attackers are looking at the bigger picture.

There's hacking, then there's hacktivism. There's malware, then there's Android Trojans like the latest "threat" discovered by Symantec. Android.Walkinwat is like the Batman of mobile malware -- a rogue vigilante seeking justice through means that also skirt legality, but for a good cause.

The Android world is still reeling from the DroidDream invasion of the Android Market. Google has flipped the kill switch to wipe out apps associated with DroidDream, but the work of investigating how this Android Trojan infiltrated Google, and how to prevent similar attacks in the future is just beginning.

The concept of ethical or whitehat hacking is nothing new. There is some merit to the "it takes a thief to catch a thief" mentality, and using the same tools employed by malicious attackers to test and fortify networks rather than compromising them. However, when the blackhats start selling "whitehat" hacking tool kits there is good reason to be skeptical.