Malicious users are a threat to many sites and defending against them demands innovative
countermeasures. When malicious users join sites, they provide limited information about …

A certain amount of web traffic is attributed to web bots on the Internet. Web bot traffic has
raised serious concerns among website operators, because they usually consume …

Recent studies show that 20.4% of the internet traffic originates from automated agents. To
identify and block such ill-intentioned traffic, mechanisms that verify the humanness of the …

Distributed denial-of-service (DDoS) attacks have become wide-spread on the Internet. They
continuously target retail merchants, financial companies and government institutions …

Digital progress has undoubtedly made our lives easier—this makes it far easier for us to
overlook the harm that these technologies do in our daily lives. Even for experts in the field, it …

Malicious bot traffic has long been a serious threat to the stability and reliability of the
Internet. Despite continued efforts and best practices, network attacks by automated bot …

With the rise of social media, user-generated content has become available at an
unprecedented scale. On Twitter, 1 billion tweets are posted every 5 days and on Facebook …