>https://www.washingtontimes.com/news/2020/may/21/australian-researchers-see-virus-design-manipulati/
Like other scientists who studied the virus, the Australian team did not find easily recognizable artificial gene inserts that would signal virus engineering. Mr. Petrovsky said there are ways to manipulate viruses without such inserts.
For example, laboratory technicians could take a bat coronavirus that is not infectious to humans and force its evolution by culturing the virus with cells that have the human receptor.
That process was used to culture SARS coronaviruses in laboratories.