APT attacks are by definition multi-stage. Defenses must be specifically formulated to thwart APT’s at specific stages of its life cycle. At different stages, different defenses will be most effective. The typical phased of the remediation phase are contain, isolate (until remediation can occur) and fix. Early detection is what will help contain the scope and impact of the attack;Remediate – The typical phase of the. remediation. phase are containing, isolate, isolate and fixing.”]