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There's somethig else worth keeping in mind—and, it appears to me, not widely appreciated: On POSIX systems, any terminal has its own 'teletype' device. And every process you run can read from that device, regardless of whether you enable "Secure Keyboard Entry." (Linus Åkesson gives a summary of how Unix systems handle terminal devices.) The names of and ...


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While Apple, as mentioned in the other answer, appears to mostly have a policy of updating the previous two major versions with fixes for significant issues, one apparently cannot rely on this always being the case. As was pointed out in a twitter thread on the subject, Broadpwn and Meltdown fixes apparently were not backported to the previous two major ...


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