[shawnz]

Being open source isn't necessary or sufficient to be able to audit a piece of software. Software can be audited even if it's closed source (for example by reverse engineering, although it's more difficult), and even if it's open source it might still be impractically difficult for non-experts to audit.

[NoImmatureAdHom]

"more difficult" is an understatement!

I agree that FOSS doesn't solve all ills. It's a necessary step, though.

[ignoramous]

A 5B install-base would invite all sorts of experts to review an OSS codebase, I'm sure.