Abstract
The security of computer systems is highly critical in CPS (Cyber-Physical Systems) as the use of physical systems controlled by compromised computing systems poses a threat to the users. In this paper, we first describe a security attack that exploits the weaknesses of computer hardware, known as the cache-side channel attack, and discuss the impact of the attack on the CPS environment. Next, we propose a two-stage attack detection technique that can dynamically detect the cache-side attack based on flush+reload by using hardware performance counters while supporting online monitoring. The experimental results demonstrate that our proposed technique can detect the attacker processes effectively with zero failure rates when co-operating with certain applications.
Keywords
Agricultural robots, Computer hardware, Embedded systems, Failure analysis, Network security, Attack detection, Computing system, Failure rate, Hardware performance counters, Online monitoring, Physical systems, Security attacks, Side-channel attack.