A sandbox is a technology on a host that is used to isolate a running application from other applications. A sandbox creates a controlled and restricted environment for the application to execute, limiting its access to system resources and data. A sandbox can prevent the application from spreading malware, stealing information, or causing damage to the host or the network. A sandbox can also be used to test and analyze the behavior of unknown or suspicious applications without risking the security of the host. Application allow list, application block list, and host-based firewall are other technologies on a host that can be used to control or restrict the execution of applications, but they do not isolate them from other applications. References:
* How can I best isolate a particular program (game)
* App isolation in Windows 10
* Types of Endpoint Application Isolation and Containment Technology

The communication channel established from a compromised machine back to the attacker is known as a command and control (C2) channel. This channel allows attackers to maintain communication with the compromised system, issue commands, and potentially exfiltrate data. The C2 channel can be established using various protocols and methods to evade detection and maintain persistence.

Indirect evidence is evidence that does not directly prove a fact, but rather implies or infers it from other facts or circumstances. Indirect evidence is also known as circumstantial evidence or corroborating evidence. A video of a suspect entering a data center that was captured on the same day that files in the same data center were transferred to a competitor is an example of indirect evidence, because it does not directly show that the suspect was involved in the file transfer, but rather suggests a possible connection or correlation between the two events. References := Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) v1.0, Module 5: Security Policies and Procedures, Lesson 5.3: Digital Forensics, Topic 5.3.1: Evidence, page 5-24.

Traffic fragmentation is an evasion technique where an attacker splits malicious payloads into smaller packets. This can help avoid detection since some security systems may not reassemble these packets to inspect the complete payload.