A developer explores three Linux sandboxing tools for securing applications on their laptop. Firejail offers filesystem and network restrictions but runs with elevated privileges (setuid root), creating potential security risks. Landlock provides unprivileged sandboxing with network restrictions but has coarse-grained filesystem controls that allow access to entire directory trees. Bubblewrap emerges as a promising solution combining unprivileged operation with fine-grained filesystem layering, though migrating configurations requires effort.
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