01452nas a2200217   4500000000100000000000100001000000100002008004100003260008200044653001800126653001300144653001900157653002000176653002000196653001900216653001200235653001200247100002100259245006800280520088600348       2012                            d  cDecember 2012bInstitute of Information and Communication TechnologiesaSofia10acyber threats10adynamics10aIT4Sec reports10ascenario method10asocial networks10ausers response10aWeb 2.010aWeb 3.01 aZlatogor Minchev00aCyber Threats in Social Networks and Users’ Response Dynamics3 aThe report presents first results in a study on the opportunity to identify cyber threats in social networks with the help of experts’ knowledge and application of the scenario method. The process of validation is performed by two focus groups questionnaires-based surveys combined with experiments involving psycho-physiological monitoring. Study results conform with the hypothesis for users’ predisposition to hidden threats in known social network environment, related to social engineering. Additionally, correlated dynamic changes regarding studied users’ brain activity during regular surfing and entertainment activities have been also observed. The study provides a promising methodological framework for identification of obvious and hidden cyber threats in modern social networks, facilitated by already popular Web 2.0 technologies and emerging Web 3.0 solutions.