Systems and methods are disclosed for a sandbox based network isolation system configured to protect cloud based assets. A host computer system may include a processor and a memory. The host computer system may include a workspace. One or more applications may run in the workspace via a first memory space (e.g., a trusted memory space). The host computer system may include an isolated computing environment. One or more isolated applications may run in the isolated computing environment via a second memory space (e.g., an untrusted memory space). The isolated computing environment may be isolated from the workspace by an internal isolation firewall. The internal isolation firewall may prevent communication between the isolated computing environment and the workspace.