The present disclosure relates generally to secure data management techniques. Techniques are described for pairing devices and using the pairing information for granting or denying requests (e.g., data exchange requests) from the devices, for example, in a cloud environment, including Internet of Things (IoT) cloud. Devices can be paired with each other according to their identification information. Subsequently, when an original request is received from a first device, and a chasing request received from a second device, the pre-registered pairing information is used to determine whether the first and second devices form a valid pair and the original request is granted or denied based upon that determination. For example, the request may be granted only if it is determined that the first device and the second device have been previously paired. In certain embodiments, in addition to the pairing check, additional checks may be performed to determine whether to grant or deny the original request from the first device.