Linux administrator, PHP programmer, mainframe sysadmin, security specialist.
Q&A for professional and enthusiast programmers
Q&A for Information security professionals
Q&A for computer enthusiasts and power users
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Q&A for software developers, mathematicians and others interested in cryptography
Q&A for professional programmers interested in conceptual questions about software development
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation