Entanglement in states of a composite (quantum) system -- consisting of far apart subsystems -- is considered to be the most important ingredient for achieving efficient information processing tasks in the quantum world. Unfortunately, maintaining entanglement among the subsystems is a challenging task as quantum systems are quite fragile to the interactions with their environments. As a result, witnessing entanglement in states of a given composite system is of fundamental importance before using the states for any information processing task. Unfortunately, any such entanglement witnessing scheme is state-dependent. On the other hand, for any experimentalist, it is always desirable to have a universal entanglement witnessing scheme which can detect entanglement in a reasonably large class of states of the system -- if not all the
states of the system. In this talk I will briefly touch upon our recent efforts in the direction of universal witnessing of entanglement in specific bi-partite systems.