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 Catalano is a CFP and Registered ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Doug Mahoney Doug Mahoney is a writer covering home-improvement topics, ...

A buffer overflow happens when a program writes more data into a memory buffer than the buffer can hold. The extra bytes land in adjacent memory, corrupting whatever was there. If an attacker controls ...