iSpy version 7.1.8.0 was actually released on October 26, 2018 . Software installers labeled as "full 2021" for this older version are highly likely to be malicious or deceptive, as the software has been free and open-source since its inception.
While there is no specific "paper" for that download string, there are academic research papers discussing the security of surveillance systems and projects with similar names: IDB | iSpy - Open Knowledge free-download-ispy-7-1-8-0-full-2021
The string appears to be a search query designed to find cracked or "full" versions of iSpy, a popular open-source video surveillance software. Key Findings & Security Context iSpy version 7
The developers have largely shifted focus to Agent DVR , which is a more modern, standalone service replacement for iSpy. Research & Academic "Papers" Key Findings & Security Context The developers have
iSpy is legitimate, free software developed by DeveloperInABox. It is primarily used for connecting webcams and IP cameras for home and business security.