Re: CAPTCHAs-Understanding CAPTCHA-Solving Services in an Economic Context. - Marti Motoyama; Kirill Levchenko; Chris Kanich; Damon McCoy; Geoffrey M. Voelker; Stefan Savage (USENIX Security Symposium, 2010)

Measuring Online Service Availability Using Twitter. - Marti Motoyama; Brendan Meeder; Kirill Levchenko; Geoffrey M. Voelker; Stefan Savage (WOSN, 2010)

Topic modeling of freelance job postings to monitor web service abuse. - Do-kyum Kim; Marti Motoyama; Geoffrey M. Voelker; Lawrence K. Saul (AISec, 2011)

An analysis of underground forums. - Marti Motoyama; Damon McCoy; Kirill Levchenko; Stefan Savage; Geoffrey M. Voelker (Internet Measurement Conference, 2011)

No Plan Survives Contact: Experience with Cybercrime Measurement. - Chris Kanich; Neha Chachra; Damon McCoy; Chris Grier; David Y. Wang; Marti Motoyama; Kirill Levchenko; Stefan Savage; Geoffrey M. Voelker (CSET, 2011)

Dirty Jobs: The Role of Freelance Labor in Web Service Abuse. - Marti Motoyama; Damon McCoy; Kirill Levchenko; Stefan Savage; Geoffrey M. Voelker (USENIX Security Symposium, 2011)