Intelligent CISO Issue 08 | Page 45

industry unlocked Barbara Dalibard, CEO, SITA being hacked all at once to bring such an event to life. However, an attacker with deep knowledge of aviation systems could intentionally cause serious issues with the aeroplane’s intended operations. Due to the complexity of aircraft systems, through the years, the size of the software www.intelligentciso.com | Issue 08 It is encouraging to see that both airlines and airports are investing in biometric technology to deliver a secure, paperless way to identify passengers across multiple steps of the journey. supporting those systems has grown exponentially. There are millions of lines of code involved in avionics systems. If not regularly tested for vulnerabilities, severe security threats can arise. That’s easier said than done when considering that the complexity of these systems can lower the testability of software, thus leaving behind many vulnerabilities that could potentially be exploited. Over the life cycle of an aircraft, it will go through multiple phases of overhaul and updates. The associated software must also undergo appropriate changes. Unless this job is carried out with extreme caution, there is a great deal of potential for security bugs to creep into the software. Let’s take a few minutes to consider the attack surface. Modern avionics software development often uses commercial off-the-shelf (COTS) components to some extent. An attacker could, in theory, tunnel through such components to enter the heart of the system. This is a key consideration in the 45