Final answer:
Abin has scanned prefetch files, which are used by the Windows operating system to speed up application launching and can provide information about applications that have been executed on a system.
Step-by-step explanation:
In the given scenario, Abin has likely scanned prefetch files. These files are created by the Windows operating system to help speed up the loading of frequently used applications. Prefetch files contain details about the files loaded by the application during startup, which can provide investigators with information about previously installed, executed, and deleted applications on a system.
Prefetch files are stored in the \Windows\Prefetch directory and have a PF extension. They are designed to improve application startup performance, but they can also be valuable for digital forensics because they hold a record of execution. By examining these files, an investigator can deduce which programs have been run on a computer and sometimes even the frequency of their use.
In the given scenario, Abin has scanned the Prefetch files to gather details about previously installed, executed, and deleted applications on the system. Prefetch files are created by Windows to optimize the loading time of applications. They store information about the files and libraries that are accessed during the launch of an application.