An apostrophe for contraction is used when words are shortened. Most of the time, this happens when two words are joined together, and the apostrophe shows where letters have been left out. For ...

SQL injection attacks are among the oldest exploits against web applications, dating back more than a decade. Sadly, despite the fact that it is fairly easy to defend against these injection attacks, ...

Brian Beers is a digital editor, writer, Emmy-nominated producer, and content expert with 15+ years of experience writing about corporate finance & accounting, fundamental analysis, and investing.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...