“Over the past year or two, someone has been probing the defenses of the companies that run critical pieces of the Internet. These probes take the form of precisely calibrated attacks designed to determine exactly how well these companies can defend themselves, and what would be required to take them down. We don’t know who is doing this, but it feels like a large a large nation state.”
Bruce Schneller (the ‘security guru’ in the words of the Economist) at Lawfare. You use it. And it is quite possible. Worth a read in full.