Facing an $8.3 billion budget deficit this year, closing post offices is one of several proposals the Postal Service has put forth recently to cut costs.
Although it has been spruced up and re-hung, most recently in 1996, the corridor is closed to all save the most persistent or well-connected because of a chronic shortage of guards.
The only positively unhackable system is a computer that's turned off, and even that isn't a guarantee because someone might be able to physically walk up to it, turn it on, and hack it.
The Aussie Department of Defence confirmed that the hack took place between Monday and Tuesday, forcing it to pull the entire RAAF website offline. The site has now been restored.