An access path is the route an attacker uses to enter, maintain, or regain access to a target environment. It can include stolen credentials, exposed remote services, unpatched applications, compromised accounts, or a previously planted backdoor. In practice, the access path is the first working foothold that lets an intruder move from outside the network to an internal system.
This concept matters because ransomware and other intrusions often succeed long before malware is launched. If defenders only look for a specific payload, they may miss the earlier compromise point. Security teams focus on access paths by reviewing authentication logs, hardening internet-facing systems, monitoring for unusual administrative activity, and removing persistence mechanisms. Breaking the access path can stop repeat intrusion, even if attackers rotate tools or rebrand their malware.