[ROOT EXPLOIT+PATCH][2012.12.19] ExynosAbuse APK v1.40

This apk is not a security risk. The fact that an apk can root in the first place is the security risk. (Because a malicious dev could build this script into their app to root someone's phone without their knowledge, and do horrible things with it, like wipe system or format emmc)

Chainfire's apk is a harmless tool-no more risky than flashing a rooted tar with Odin.

That apk work on Galaxy s2 NFC TIM Italy i9100p ?

While this will help product (protect?) you, these are work-arounds, not actual fixes.