The Mobile Application Security Testing Guide (MASTG) is a comprehensive manual for mobile app security testing and reverse engineering. It describes the technical processes for verifying the controls listed in the OWASP Mobile Application Security Verification Standard (MASVS).
With Android Oreo, the way you can handle shared memory (Securely) has changed. time to udpate the MSTG! https://developer.android.com/about/versions/oreo/android-8.1 Let's check the platform interaction section & data storage section.