If you spend a lot of time typing Microsoft Word documentswith mathematical formulas, let the Equation Editor format the text for you.

Windows patches: Microsoft kills off Word's under-attack Equation Editor, fixes 56 bugs Microsoft removes Equation Editor from Word after finding more attacks on Office users.

An old flaw in Microsoft Office is being used in targeted attacks, according to researchers at Menlo Security on Tuesday.

Equation Editor lacks all of the protections found in Microsoft's recent code, making its flaws much easier to exploit than those of, say, Word or Windows.