In many cases, malware uses design weaknesses in the system architecture in order to achieve its goals. Examples could be unauthorized access to sensitive data, tampering with security measures, or modification of system files to achieve persistence or stealth. Thus, the security model plays a vital role in reducing the attack surface, and in this way, reducing the number of techniques available to malware authors.
Now, let's take a look at security models introduced in macOS and iOS and see why they are important when we talk about malicious code.
