Attackers have been looking for and using new bugs for as long as there has been software to exploit. In recent years, zero days are being used by governments, intelligence agencies and state-sponsored attack teams. Attackers can’t keep pace with patches coming out for known bugs, let alone defend against attacks on zero days. Andreas Lindh of I Secure in Sweden: We need to get our priorities straight. The tools we have work pretty well when you use them correctly. We actually have really good tools
Source: https://threatpost.com/zero-days-are-not-the-bugs-youre-looking-for/102481/