This simple perl script takes the output of gpg --list-keys --verbose, which lists all the keys in your public key ring, along with all their signatures, and converts it to a di-graph in "dot" language form. The graphviz package can turn the description into a graph you can look at to see who has signed whose key, or how far it is from your key to someone in Reykjavik, etc.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.