I would like to write about how untrusted applications or websites effect user trust negatively, especially after the increase of  cybercrimes. Sadly, not just normal users who are involved and effected by cyber-attacks, but also companies, hospitals, traffic system, Military, and power systems. And cyber-attacks are becoming more and more dangerous every day and every minute. Moreover, hackers are developing the ways of attacks and the tools they are using and that make the attacks more dangerous and so difficult to prevent our systems and identity information to be in the wrong hands.