The Ministry of Defence have admitted, in response to a Parliamentary question, that in August 2008, three USB portable hard drives were stolen from a "secure computer facility at RAF Innsworth". The incident happened sometime between 22 August and 17 September 2008. The contents of the stolen drives "6.2 million documents containing an archive of RAF personnel information".
Clearly the "secure facility" is not that secure. Mind you it could be that the theives used a stolen or lost security pass in order to get in. Either way, an archive of 6.2 million personnel documents is now out there.
One hopes that it has been deleted and the theives had no ulterior motive. If a list like that fell into the hands of terrorists then that would be a wealth of useful information for what would be considered "legitimate targets".
I would've thought such a fresh and recent admission of not just a security breach in a "secure facility" but also the loss of exceptionally sensitive data would have got some coverage, although I guess it did come about on the same day the Damien Green mess kicked off.