Jul20
Paranoia in APT Land posted by Rick Howard
Filed in: APT
I just visited the US International
Trade Commission. They invited me to discuss what iDefense knows about
intellectual property theft in cyberspace; in other words, what is going
on
with the "Advanced Persistent Threat" (APT)? Just this past year, it
seems like
the APT acronym has really emerged as the catch-phrase for the security
industry. We use to call this activity "cyber espionage." I guess
old-timers
like me still call it that, but the cool kids call it APT.
That's the good news. The more people that understand the
threat, the better we can all protect our enterprises. The bad news is that
there is not a lot of consensus about what we are supposed to do about it.
Some of my friends jump right to detection. They think
the most important thing you can do to defend yourself against the APT is to
detect and eradicate the activity on your network. I don't disagree that we all
should be doing that, but I would like to make an argument for putting some
significant effort into prevention. If it is true that the number of victims
that have been penetrated by some APT group is in the thousands, shouldn't we
pretty much assume that we can all be had by these players and that we all
might have something useful that they want? If thousands of victims exist,
doesn't that mean that our traditional cyber security defenses are not working?
Off the top of my head, here are some things network
defenders should consider. Assuming that some APT organization is attacking
your enterprise, what do they want? Two things come to mind: they want the
secret sauce that makes your company unique and they want leverage in any
contract deal that is currently underway. To protect both of these "crown
jewels," here is a list of things I would add to my standard network defenses:
1. Physical separation between the corporate network, the
secret sauce, any Merger & Acquisition (M&A) groups and any contract
deals. I would go as far as physically separating each contract group and
M&A group into its own network. Defend the walls of these networks
rigorously.
2. Ruthlessly enforce the "Need to Know" rule for each
separate network. If you do not need to know about an M&A Deal, you don't
get into that network.
3. Encrypt everything in transit and at rest. This
included data on your smartphone.
4. If you are traveling in foreign countries. Use
throw-away laptops and phones (You still have to encrypt them though).
5. Label all documents and e-mail with the appropriate
data classification. Do not allow designated classifications out of each
separate network. For the exceptionally paranoid, install beacons in all
documents; small snippets of code layered into headers or footers that call
home every time a user opens them.
I know these remedies are not as sexy as catching the APT
groups in the act. Sometimes, the least sexy remedies are the
most effective. In addition, I'll admit, these remedies seem a little paranoid;
however, if the victim list is in the thousands, isn't it time to be a little
paranoid?