us to achieve our desired lifestyle. However, service security is an essential part to ensure
that the designed service is not compromised. In this paper, we proposed a security analysis
for IoT services. We focus on the context of detecting malicious operation from an event log
of the designed IoT services. We utilized Petri nets with data to model IoT service which is
logically correct. Then, we check the trace from an event log by tracking the captured …