The factors that actually impact the upper boundary of achivable security are availability of source code (open or not) and reproducible builds. The 4 freedoms do not actually affect any aspect of security, they are orthogonal.
Also, just because the 2 factors above impact the upper boundary of achievable security does not mean an open source software is automatically more secure.
It is conceivable for 2 comparable pieces of software to exist one open source and the other closed source and for the closed source one to be more secure.
There are many reasons why open source software is in practice considered more secure, among others being faster availability of updates and the aforementioned higher upper ceiling of security.
>does not mean an open source software is automatically more secure
well my point is that FSF never anywhere claimed otherwise. if they did THAT would be wrong and irresponsible
>It is conceivable for 2 comparable pieces of software to exist one open source and the other closed source and for the closed source one to be more secure.
sure. well a simple example is that security by obscurity is a valid concept in a right environment
Also, just because the 2 factors above impact the upper boundary of achievable security does not mean an open source software is automatically more secure.
It is conceivable for 2 comparable pieces of software to exist one open source and the other closed source and for the closed source one to be more secure.
There are many reasons why open source software is in practice considered more secure, among others being faster availability of updates and the aforementioned higher upper ceiling of security.