The User Login with the Constantly Changing Password Depending On Algorithm and Detection of Illegal Logins

Computer programs and web applications are often used in our daily lives. In many fields such as E-mail services, e-government services, social nets or education necessities etc. people always live involved in these technologies. With the increasing of these services from computer some of the security problems come out. In information Technologies security of personal information, closing it to the access of foreign people is the most important requirement. Because of this reason some security precautions were wanted the user to take, such as obligatory password choice, password entry with the screen keyboard. But these methods are not trustable as much as old days, with the development of some applications which can not be identified with anti-virus softwares and with the entry of user name and password screen display can be taken. Nowadays although some institutions, such as banks use single-use password-generating devices or SMS verification service for 3D protection. But it can not be used by a number of other organizations because it is costly In Our study a solution has sought to this problem by creating a dynamic password and successful results were obtained. In database user password was not saved with character values it was saved with the character generated algorithms which were determined by the users and every user should enter with a new password in every entry. So if the password is stolen, this password will be invalid for the other trial. Key words: Generating dynamic password, screen keyword, detection of illegal logins