"Open Source" in an intelligence context actually predates the software licensing context. Here is an example from 1993:

https://books.google.com/books?id=zYQ4AQAAIAAJ&pg=PP3&dq=%22...

For that reason, the term introduced by Christine Peterson in 1998 was actually "Open Source Software":

https://opensource.com/article/18/2/coining-term-open-source...

No they're talking about open source developers. There's a whole paragraph in the article where they talk about how America is at a disadvantage because countries like North Korea benefit from American openness while remaining closed themselves. The state could easily decide one day that it wants to turn off the spigot of generosity, and in order to do that, they'd have to suppress all the generous people.

And "OSINT" is a fad term for what used to be called journalism, preferred by journalists who sadly identify more with their countries intelligence services than with their fellow journalists.

They often do good work, but it's a sad trend. In many ways it's Julian Assange's original vision for Wikileaks: collaborative (thus "wiki") analysis of verifiable public information, but co-opted by powerful interest groups and states.