Whereas High Security Mode is level of maximum protection of you computer there is possibility of little discomfort during some applications use. Together with protection against any spy software Advanced Anti Spy Pro has little influence on features of some applications connected with keyboard like hot-key combinations and others. That is why Custom Security Mode was developed. Custom Security Mode allows experienced computer users to avoid discomfort from above Advanced Anti Spy Pro influence. Using configurable set of rules experienced user can allow operation of keyboard features for well-known applications and prohibit operation of others needless or unknown. In any case Custom Security Mode could be used with high caution.