Remote-access infrastructure is the set of systems that let people connect to an internal network from outside it. Common examples include VPN gateways, remote desktop brokers, admin portals, and vendor access tools. These services are essential for remote work and support, but they also create a high-value entry point because they sit on the internet and authenticate users before granting access.
In cyber attacks, adversaries often target remote-access infrastructure first by stealing credentials, exploiting unpatched appliances, or abusing weak multi-factor authentication. Once inside, they may use valid accounts to move toward sensitive systems, escalate privileges, or deploy ransomware. Defenders reduce risk by patching internet-facing devices quickly, enforcing phishing-resistant MFA, limiting who can use remote access, logging every session, and removing unused portals or accounts. Because these systems bridge the outside world and the internal network, they are among the most closely watched assets in incident response.