Mayfield has a team of experts to help you recover from a data breach. What is a data breach and will one occur? A data breach occurs when protected, confidential, or sensitive data has been accessed was released unauthorized. It’s not a matter of if a data breach will occur, it’s a matter of when. It can happen to anyone, luckily Mayfield’s data breach response team can not only track down who is responsible and what was accessed, but can also mitigate any damage that might have occurred.