One bug being patched is found in Microsoft's PowerPoint presentation software and an exploit code is known to be circulating online.

BBC: Windows XP on laptop, Getty

And you could make a case that Microsoft Office's PowerPoint presentation software has too much power--power that is abused by artless employees who use it to craft bloated, incomprehensible presentations.

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Yet Keynote still acknowledges that Powerpoint is the dominant presentation software in the business world.

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