Compound that with the new tools used by insidious attackers to harness the very defences meant to block them, and the result can be anything from a nuisance to a disaster.A new generation of network-security firms is out to tackle these problems by looking in rather than out.
Barbour, who's as well-connected and as savvy as any Republican can be – and who ironically, perhaps, spent years lobbying for the very US defence contractors whose influence he's now decrying – is clearly sensing that American voters, nearly two thirds of whom now say the Afghanistan intervention was a mistake, are open to this message.
Pryce's case rested on the very unusual defence of marital coercion - that she had been forced to take the points.
He is the highest scorer in Panama's history, with 43 goals, but any chance of troubling the very best defences seemed to have passed him by until their dramatic qualification in October.
With their long successful track record in counter-terrorism, police have adapted well to the changing circumstances and, at the last moment, the very best defences they have built, the neighbourhood teams and the fast and accurate response to multi-site concurrent attacks, are being degraded," Lord Blair said.
England's 10/12/13 axis will have to find a way to control Jamie Roberts (and account for his expert decoy running), as the often sensational lines through which he chooses to hurl his enormous frame have undone the very best defences in the world.
"Back home in the NRL it's very defence-oriented, but coming here I've started to enjoy my rugby again and that's a big factor.
"We didn't do anywhere near enough against a team that was very defence-minded and left it to the two lads up front to break.
Yeovil Town manager Gary Johnson told BBC Somerset: "We didn't do anywhere near enough against a team that was very defence-minded and left it to the two lads up front to break.
"He is a very defence-minded midfield player and tackles phenomenally well".
