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Make changes to rules to improve performance and reduce FPs: - Rely on an upcoming change to sysdig (draios/sysdig#610) that allows specifying an open/openat for reading/writing, without having to search through all the flags individually. - Switch to consistently using evt.type instead of syscall.type. - Move positive tests like etc_dir, bin_dir, etc., which are most likely to not succeed, to the beginning of rules, so they have a greater chance to cause the rest of the rule to be skipped, which saves time. - Using exim as a mail program--exim also can suid to root. - apt-get install curl--add a new macro for ssl management binaries and allow them to write below /etc and read sensitive files. - starting/stopping dhcp networking-add a new macro for dhcp client - binaries and allow them to write below /etc. - Add exe (docker-related program) as a program that can set a namespace using setns. - Don't count /dev/tty as an important file under /dev.
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