Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Article number | 5601666 |
---|---|
<mark>Journal publication date</mark> | 02/2011 |
<mark>Journal</mark> | Computer |
Issue number | 2 |
Volume | 44 |
Number of pages | 7 |
Pages (from-to) | 54-60 |
Publication Status | Published |
<mark>Original language</mark> | English |
Captchas are a standard defense on commercial websites against undesirable or malicious Internet bot programs, but widely deployed schemes can be broken with simple but novel attacks. Applying security engineering expertise to the design of Captchas can significantly improve their robustness.