Asaf Shabtai

Advanced persistent threat (APT): A class of sophisticated cyber-attacks that target organizations Infiltration: A means of compromising the social network graph by connecting with a large number of users; socialbots can be executed to infiltrate social networks Influence bots: A bot that tries to influence conversation on a specific topic Socialbot: An artificial, machine-operated profile in a social network that mimics human users, looks genuine, and behaves in a sophisticated manner Spambot: A computer program designed to help send spam Sybil attack: A type of attack in which a malicious user creates multiple fake identities (Sybils) in order to unfairly increase power and influence within a target community Definition In recent years, online social networks (OSNs) are becoming an essential part of our lives. However, OSNs have also been abuses by cyber criminals that exploit the platform for malicious purposes….