By now we all heard how cloud computing will revolutionize the Internet and be the next best thing to happen to online businesses, consumers, education and the world at large. But we haven't heard much of what investigative concerns the so-called cloud brings with it. As most of us realize, the concept of cloud computing is nothing new. Technically we have been living with this "cloud" since the inception of the Internet and the World Wide Web. What this new cloud concept seems to add to the equation, is the ability to have various levels of distributed storage and application services.
While there are numerous security concerns being discussed by various cyber security "Czars," there seems to be little if any discussion about how the cloud will affect digital forensic investigations. Just off the top of my head I can think of several concerns that are generic to the concept of cloud computing to say nothing of specific concerns related to specific implementations or hardware and software applications.
Some basic questions are related to:
a) Jurisdiction - which sovereign nation or nations has/have authority?
b) Ownership - who actually owns the data in question?
c) Expectations of privacy - what will be the standard for reasonable expectations of privacy in the cloud?
d) Location of evidence - where do we even begin to look for data that may be classified as evidence for the investigation?
e) International cooperation - will countries housing/storing the data be willing to cooperate during an investigation?
f) Localized evidence - what artifacts will be left on the client machine?
To me these seem like obvious questions/concerns that we need to think about, debate and start working toward some answers. As I stated in the opening paragraph, the cloud is being touted as the greatest thing since "sliced bread," whether this is actually the case or not.
We as investigators will soon find ourselves truly immersed in the world of "virtual" evidence; a very sobering thought. One can only imagine how a judiciary who has trouble wrapping its mind around the concept of e-mail, will be able to keep up with the various technical solutions that make up the concept of cloud computing.
It behooves the digital forensics community to weigh in on discussions related to cloud computing and provide input as to what this latest technology savior will eventually become.