From the decision (linked in the EFF article):

For example, hacking is much more prevalent now than it was even nine years ago, and the rise of computer hacking via the Internet has changed the public's reasonable expectations of privacy. ... Now, it seems unreasonable to think that a computer connected to the Web is immune from invasion. Indeed, the opposite holds true: in today's digital world, it appears to be a virtual certainty that computers accessing the Internet can - and eventually will - be hacked.

That's what you get when you combine the doctrine of "expectation of privacy" (which essentially confounds Is and Ought) and the insecurity of today's software.