Simple Definition

Q- What is Non Repudiation ? A - Repudiation means 'deny' hence Non-Repudiation means 'someone can not deny something'.  Typically it means that the sender can not deny the authenticity of his/her signature on a communication originated by him/her.

Q- What is Risk Management ? A-  Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

Q- What is Information Security ? A-  Information security is the practice of defending information from unauthorized access, use disclosure, disruption, modification, perusal, inspection, recording or destruction.