ABSTRACT
A zero day attack is the type of attack where people make use of flaw in the software developed by various companies. There is no patch available so it is difficult to tackle such types of attacks even when developers of the company are known to this. For any network such attacks can be possible only way to get through this is to prevent such types of attack. If the network administrator knows that how many such attacks can be possible then he can make some changes in his administrator rights. It is found that more than five thousands vulnerabilities are occurring per day. We are proposing complete novel scenario which can lead to the counting of such vulnerability in very efficient way. Using this method we can easily provide option of network hardening so as to prevent it from unknown vulnerability.
