Passtrans: an improved password reuse model based on transformer xiaoxi he haibo cheng * jiahong xie ping wang kaitai liang peking university { hxx2019, hbcheng, xjhshare, pwang } @pku.edu.cn delft university of technology kaitai.liang@tudelft.nl

HIGHLIGHTS

SUMMARY

This fragile password generation may bring potential leakage risk to the new passwords once the old credentials are compromised, which is known as credential tweaking attack. In 2014, Das et_al first studied the threat of password reuse and proposed a cross-site password guessing algorithm. The output of their model is the transformation path of leaked passwords to targeted passwords. To characterize a user`s password reuse behavior, such as direct reuse (e_g, "password" → "password"), finetuning (e_g, "password" → "pa$$word") and irrelevant passwords (e_g, "chixue100" → "123456"), the authors propose PassTrans based on the transformer . . .

 



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