Attacks in cyberspace have got attention due to risk at privacy, breach oftrust and financial losses for individuals as well as organizations. In recentyears, these attacks have become more complex to analyze technically, as wellas to detect and prevent from accessing confidential data. Although there aremany methodologies and mechanisms which have been suggested for cyber-attackdetection and prevention, but not from the perspective of an attacker. Thispaper presents the cyber-defence as hindrances, faced by the attacker, byunderstanding attack thread and defence possibilities with existing securitymechanisms. Seven phases of Cyber Attack Thread are introduced and technicalaspects are discussed with reference to APT attacks. The paper aims forsecurity practitioner and administrators as well as for the general audience tounderstand the attack scenario and defensive security measures.
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