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...to others to send spam to, or steal data from. ‘How to Survive a Botnets Attack’ is a short animation that explains how to work safely on the internet and avoid your computer joining the ranks of the un-dead... How to Survive a Botnet Attack? This animated tutorial shows you how to spot and survive a botnet attack and also how to prevent one from ever happening again....

...work needed to do complicated calculations, such as those required in astronomy and navigation. Napier’s ‘excellent brief rules’ were quickly adopted and improved upon. This OpenLearn course provides a sample of Level 2 study in Mathematics...This free course looks at Scotsman John Napier (1550-1617) and his invention which radically altered the course of...

...work out how long it has taken to fall. Mathematics provides a natural medium for rational argument. Given an equation that relates various quantities, the rules of mathematics allow that equation to be re-expressed in a number of different but logically equivalent ways, all of which are valid if the original equation was valid. Given two equations, mathematical reasoning...