Account lockout attack

Revision as of 06:06, 26 May 2009 by Deleted user (Talk | contribs)

Jump to: navigation, search

[ current temperature in melbourne australia ] [ horne automotive ] [ asian movie rentals ] [ africa waterfall ] [ tarkastad south africa ] [ autocad building drawings ] [ adult australia resort vacation ] link links [ lion+king+australia ] [ asian male hairstyles ] [ cute asian schoolgirls ] [ norton antivirus serial crack ] [ hot asian horny girl ] [ australian blanket shepherd ] [ asian martial arts center ] [ asian african legal consultative organization ] [ toto africa lyrics meaning ] [ safari africa luxury ] [ australian independent film ] [ african american literature.nobel site ] [ norton antivirus free ] [ panda antivirus serial ] [ australia's museum of flight ] site [ asian earth quake ] china export to australia [ homes+australia ] [ seychelles map africa ] [ asian big toy ] domain map [ parts for datsun 280z automobile ] [ auto parts mazda wreckers mx5 ] [ australian holiday houses ] [ autohits autosurf autosurf exchange site ] [ pheromone trap heliothis australia ] sitemap [ asian garden plants ] [ good maps of africa ] [ asia photo ] antivirus software program [ rat zapper australia ] [ australian dick moby ] [ trend antivirus scan ] [ black african american hair styles ] [ asian slaw ramen ] [ update norton antivirus ] [ small antivirus program ]

This is an Attack. To view all attacks, please see the Attack Category page.

Last revision (mm/dd/yy): 05/26/2009


In an account lockout attack, the attacker attempts to lock out all user accounts, typically by failing login more times than the threshold defined by the authentication system. For example, if users are locked out of their accounts after three failed login attempts, an attacker can lock out their account for them simply by failing login three times. This attack can result in a large scale denial of service attack if all user accounts are locked out, especially if the amount of work required to reset the accounts is signficant.

Risk Factors



eBay attack

Account lockout attacks are used to exploit authentication systems that are susceptible to denial of service. A famous example of this type of attack is eBay's. eBay used to display the user id of the highest bidder (in the meantime they changed their way of working). In the final minutes of the auction, one of the bidders could try to log in as the highest bidder three times. After three incorrect log in attempts, eBay password throttling would kick in and lock out the highest bidder's account for some time. An attacker could then make their own bid and their victim would not have a chance to place a counter bid because they would be locked out. Thus an attacker could win the auction.

Related Threat Agents

Related Attacks

Related Vulnerabilities


Related Controls