Between the repeated attacks on the United States government's IT infrastructure by foreign hackers and incursions by LulzSec, a hacker community whose members wandered in and out of government cybersystems before publicly disbanding this week, it's not difficult to conclude that the U.S.'s federal IT infrastructure is the cybersecurity equivalent of Swiss cheese. LulzSec trashed the public-facing websites of the FBI, the CIA and Congress, as well as those of Sony and other corporations.