Access risk refers to the potential for harm or loss associated with granting access to a particular resource, system, or information. It is the risk that unauthorized individuals or entities can gain access to sensitive or confidential data, leading to a breach of security, loss of data, or other harmful consequences.On the other hand, reward risk refers to the potential for gain or loss when investing in a particular asset or undertaking. It is the risk that the expected returns may not be realized, or that the investment may actually result in losses.