It's quite clever but I think that there are more effective ways of hacking machines than via DNA. Also I think that I'm more worried about DNA meddling, as that article says, biologists have to be careful not to:
spread a dangerous stretch of genetic code that could be used to create a toxin or, worse, an infectious disease
But there is plenty of fiction where the plot concerns nefarious or clumsy types that end up doing the opposite.
It's a very interesting article though, and the storing and transmission of information using DNA is a very interesting concept.