🛡️ Security

Multi-Tenant Hosting

A hosting model in which many customers share one server, one kernel, and one file system, each as a separate low-privileged local user. Any local privilege escalation bug on the host can turn one compromised customer account into control of all of them.

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How to Harden a Shared Hosting Server Against Local Privilege Escalation

On a multi-tenant host the attacker is already logged in. Seven steps to keep a compromised customer account from becoming a compromised server: inventory, restricted shells, audits, detection.

intermediate 5 min read

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