There are many kinds of digital signatures. This is more likely to happen if your computer is win7. For XP, even in SP3 version, digital signature is just a system file to prevent programs or user groups from being deleted by mistake. For the problem of 360 prompt, it should be installed in some system sensitive folders when the game is installed, so don't mind.

To be precise: a program without digital signature is in monitoring state: safe. In an unmonitored state; It is also safe; (This involves a question of monitoring and non-monitoring, abbreviated as:

Programs without digital signatures are secure. Even if it is a monitoring keyboard, even if it records information under the monitoring of security software, it will be automatically cleared when it is turned off. Even if it is recorded and not cleared, the anti-virus software will pop up a blocking dialog box during the sending process to show concern ~ It is king to scan the disk regularly and clean the registry regularly if you want information not to be leaked!