Security's a state of mind. There aren't that many serious secrets in this business, but good intelligence comes from putting together apparently unconnected - and apparently mundane and unimportant- facts.
I don't think the Russians are in any way a military threat to the UK. I don't think there's any harm in people talking about what happens when bears come wandering, most of the time. I'm a journalist and someone with an interest in aviation and defence, so I _want_ to know this stuff... but I'm happier if people keep schtumm.
R