aboutabout_customblogCreated with Sketch.blog_customcameraclosedocumenteditelieCreated with Sketch.menumessagenotepadpen_toolphotoCreated with Sketch.photos_custompublicationsCreated with Sketch.publications_customsearchCreated with Sketch.search_newsmileuserCreated with Sketch.videoCreated with Sketch.video_newvideos_custom
downloadfacebookgoogleinstagramlinkedinlocationmailredditCreated with Sketch.tagtwitteryoutube

Text-based CAPTCHA Strengths and Weaknesses

We carry out a systematic study of existing visual CAPTCHAs based on distorted characters that are augmented with anti-segmentation techniques. Applying a systematic evaluation methodology to 15 current CAPTCHA schemes from popular web sites, we find that 13 are vulnerable to automated attacks. Based on this evaluation, we identify a series of recommendations for CAPTCHA designers and attackers, and possible future directions for producing more reliable human/computer distinguishers.

Computer and Communications Security (CCS) 2011
captcha - offensive technologies - study - web security - machine learning

Discuss this paper on your favorite social network.

Recent

Elie Bursztein © 2015
Papers
Blog
Photos
About Me

Recent entries