what consists of breaching a contract?

Well, it’s certainly possible.  Keep in mind that this forum doesn’t provide you with a confidential setting…this forum is for general legal questions, and is not meant as a replacement for representation.  If you even have a concern that you may be in breach of your confidentiality agreement (or really any contract), you should set an appointment to consult with an attorney in private.  That is a confidential setting where you can find answers to your legal rights.  Many attorneys will even offer you a free half hour or even hour consultation.