Thwarting Bio-IP Theft Through Dummy-Valve-Based Obfuscation

Optimal injection attack strategy for cyber-physical systems: a dynamic feedback approach

“…Proof. If the attacker utilizes observation ξ(t) as designed auxiliary virtual state η(t), then attacked control input (7) based on the observation of [x(t), ζ(t)] T can be rewritten as…”

“…Cyberattack refers to any type of offensive action on a computer equipment, network, or infrastructure from the network layer. There are two commonly used methods for cyberattack, namely, cracking of the system password to steal the information of the attacked system [4][5][6][7] and implementing elaborately designed attack strategies to destroy the attacked system [8][9][10][11][12][13][14][15].…”

Material-level countermeasures for securing microfluidic biochips

“…12 In contrast to other polymers, PDMS has the following attractive properties: excellent replicability from micro-molds, easy to pattern by soft lithography, flexibility (unbreakable compared to glass), optical transparency, affinity to permanently bond with glass via the plasma bonding technique, biocompatibility, gas permeability, and non-toxicity. 1,3,4,12,19,[24][25][26][27][28] Thus, the microfluidics community has embraced PDMS to build microfluidic devices. Therefore, this work focuses on material-level attacks on PDMS-based microfluidic biochips.…”

“…DMFBs use discrete droplets on an electrode array leveraging the principle of electrowetting-on-dielectric, while FMBs manipulate fluid flow in microchannels using pumps and valves. 1,8,20,29 In this work, we specifically target PDMS-based FMBs due to the presence of PDMS microfluidic valves in such systems, unlike DMFBs that don't use microfluidic valves for their operation. 8 Microfluidic valves are made out of thin PDMS membranes; these valves are crucial for controlling the fluid flow in a network of microchannels.…”

“…These countermeasures can be used to proactively safeguard FMBs against material-level attacks in the era of global pandemics and diagnostics based on POCTs.encapsulates the capabilities of a laboratory by integrating different biochemical functionalities into a single miniaturized device. 1,2 Biochip components typically consist of microchannels, microvalves, micropumps, micromixers, microseparators, and reaction chambers. Biochips are ultrafast in their intended operations, i.e., dispensing, mixing, splitting, transportation, etc., because of a very small amount of samples compared to traditional test tube-based laboratories.…”