Internet of Things (IoT) based devices generated big data that comprises all data collected by sensors equipment, both structured semi-structured, and unstructured, that can be analyzed using certain algorithms and analytical techniques to handle and retrieve important possessions of such data. However, Information Security and Assurance have become increasingly important in an era in which relevant data is recognized as a key asset by many organizations. Numerous security issues related to this generated data calls for concern in terms of security and assurance relating to the information system. With the various threats and attacks to information, securing such records has now become imperative. Therefore, this paper proposes the use of cryptography-based technology to secure information on IoT-based big data generation. Triple Data Encryption Standard (3DES) algorithm will be used to secure the big data generated from IoT-based sensors and devices. The performance of the system indicated that the proposed method performed well in comparison to other state-of-the-art techniques, indicating possible uses as a veritable tool for effective privacy and security of information generated from IoT-based platform. The solution will help facilitate data circulation and it may be used as a safe framework for large-scale data processing to organize the information or data of a significant number of people.