What Is Attack Surface?
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Attack surface is the total number of points at which an unauthorized user can attempt to enter data or gain access to a system, network or application. It is the sum of all the different points of attack that a malicious actor could use to gain access to a system, network or application. Attack surfaces can range from physical access points, such as unlocked doors, to digital access points, such as open ports and vulnerable software. Organizations can reduce their attack surface by implementing security measures to limit the number of points of entry and to protect those points of entry from unauthorized access.