Not much, of course. But according to this report in the Washington Post, Secretary Sebelius today responded to reports of a cybersecurity breach that was discovered recently. According to Sebelius “there was not a breach” but a “theoretical problem” raised by a “skilled hacker.” She said the problem “was immediately fixed.” Translated that means that someone outside the system found a security gap in the system — and fortunately, they reported it, rather than exploited it. Which, of course, just reiterates the point that there are no invulnerable systems — only comparatively more or less secure ones.