Resumen
The article presents information on the reuse of password. One weak spot is all it takes to open secured digital doors and online accounts causing untold damage and consequences. Password security is an essential form of user authentication both on the Internet and for internal organizational computing systems. Password protection schemes are used to protect relatively low-sensitivity systems such as access to online archives as well as highly sensitive corporate intranets or personal bank accounts. Unfortunately the system of the user name and password works less well than believe. Moreover, the problem is escalating. The Federal Bureau of Investigation found in recent survey that detected system penetrations form outside the organization were reported by forty percent of the organizations surveyed, up form twenty-five percent a year earlier. Extensive literature on password security has evolved over the past twenty years. Much of it has been prescriptive, offering, for instance, advice for creating passwords and safeguarding them.