Common weaknesses

Authentication Issues:

All genuine methodologies show weaknesses. These weaknesses have one both of technology and of a nontechnical nature. A lot of weaknesses are common in all mechanisms. Examples of common weaknesses include attacks of warehousing, social engineering, client attacks, replay attacks, attacks " the man in middle" and the piracy or hijacking.

Warehouse Attacks:

These attacks result in the compromise of the system storage and the theft of authentication or genuine data. Often, genuine data is encrypted; however, the attacks of dictionary make deciphering also some passwords in a big group a banal task. An attack of dictionary uses a list of authenticators probable, as passwords, aims authenticators probable by the algorithm of encryption and compares result with the stealing, encrypted authenticators. Any matches are easily clear in the pre-encrypted authenticator.

The dictionary and the attacks of force violent are accomplishable owing to speed with which comparisons are made. As the increase of microprocessors in the speed and the advances of technology to attenuate the link of central processing units across networks, these attacks will be even more efficient. Because these attacks are efficient, institutions should look after in the insurance of their genuine databases. The institutions which use forcemeat of with unique sense should consider the insertion of secret pieces ("so known as salt ") to augment the difficulty in deciphering forcemeat. Salt has effect to augment the number of potential authenticators that the attackers have to prove for validity, by making attacks so more time by consuming and creating more opportunity for the institution to become identified and react to the attack.

The attacks compromise a whole genuine mechanism in a characteristic way. If such attack occurs, the financial institution should disclaim approach in all or almost all users until new genuine devices can be published. Institutions should consider the effects of such denial of approach and to plan correspondingly for the reemissions on a large scale of genuine devices.

Social Engineering:

Social engineering implicates acquiring attacker authenticators by simply asking for them. For instance, the attackers can mask the ball as a legitimate user who needs a reconstruction of password or as a businessman who must have immediate approach to correct a problem of performance of system. By using persuasion, being aggressive, or by using other interpersonal addresses, the attackers encourage a legitimate user or of other deputy to give them the genuine identification document. Orders against these attacks implicate strong policies of identification and a training of employee.

Client Attacks:

These attacks are a region of common vulnerability in all genuine mechanisms.

Passwords, for instance, can be captured by the equipment - or the mechanisms of capture of striking based on software. PKI the private keys could be captured or been up to by the opposite of their tokens. The protection against these attacks is principally made up to protect customer's systems physically and, if a shared secret is used, by changing secret on a commensurable frequency at risk. By protecting physically customer's system is possible in regions under the control of the financial institution, customer's systems outside the institution cannot similarly be protected.

Reply Attacks:

These attacks occur when an attacker listens in a indiscreet way and records the authentication as it is announced between a customer and the financial system of institution and the then last uses that by recording to establish a new session with the system and the masked ball as the true user. Protection against these attacks includes changeable cryptographic keys for every session, by using dynamic passwords, sessions expiring with the aid of the stamps of time, exhaling certificates of PKI based in dates or to the number of uses and carrying out living tests for systems biometric.

"Man-in-the-middle attacks:

These attacks put the computer of the attacker in the line of communication between the waiter and the customer. The machine of the attacker can control and change communications. Orders against these attacks include prevention by the guest and the customer fact to harden hardening, appropriated and fact to control the waiters of service of name of domain (DNS) and of other facilities of network, the authentication of the device communicating with the waiter and the use of PKI.


The piracy is the use of an attacker of the session of a user authenticated to communicate with the elements of system. Orders against the piracy include the encryption of the session of the user and the use of cookies encrypted or other devices to authenticate every communication between the customer and the waiter.

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