Linux Server Security - Hack and Defend ($29 Value) FREE For a Limited Time
Linux Server Security: Hack and Defend presents a detailed guide for experienced admins, aspiring hackers and other IT professionals seeking a more advanced understanding of Linux security. Written by a 20-year veteran of Linux server deployment this book provides the insight of experience along with highly practical instruction.
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Spreadspeed
Spreadspeed helps to save time and reduce spreadsheet errors, thanks to a superb set of operations and auditing tools that will improve the overall quality of your spreadsheets.
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