Software engineer on the first 64 bits Unix (Cray).
System & network admin. on top of a > 1000 Mac.
30 years experience on top of Unix (and internals).
Chief Information Security Officer.
Security through obscurity is worse than obscurity,
there stand equally hidden trapdoors and firewalls,
there is the kingdom of false security.
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Mathematics
Q&A for people studying math at any level and professionals in related fields
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Physics
Q&A for active researchers, academics and students of physics
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Server Fault
Q&A for professional system and network administrators
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Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
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