91 search results - page 18 / 19 » Assessing the security of VoIP Services |
SP
2010
IEEE
13 years 11 months ago
2010
IEEE
—Captchas are designed to be easy for humans but hard for machines. However, most recent research has focused only on making them hard for machines. In this paper, we present wha...
CCS
2011
ACM
12 years 7 months ago
2011
ACM
Online service providers are engaged in constant conflict with miscreants who try to siphon a portion of legitimate traffic to make illicit profits. We study the abuse of “tr...
WICOMM
2008
13 years 7 months ago
2008
With the recent advances in portable devices and wireless networks, a new paradigm of computing has emerged which is known as mobile computing. In general mobile computing can be ...
INFOCOM
2005
IEEE
14 years 1 months ago
2005
IEEE
— Current computing systems depend on adaptation mechanisms to ensure that they remain in quiescent operating regions. These regions are often defined using efficiency, fairnes...
ACISP
2009
Springer
14 years 6 days ago
2009
Springer
Client-side attacks have become an increasing problem on the Internet today. Malicious web pages launch so-called drive-by-download attacks that are capable to gain complete contro...