32. In coordination with our allies, we have also sought to raise the cost of state-sponsored hostile activity in cyberspace by attributing attacks – as we did with the recent SolarWinds and Microsoft Exchange breaches – and imposing consequences on those responsible. The development of the autonomous UK cyber sanctions regime has added another disruptive tool that we have used to respond to incidents such as the WannaCry and NotPetya attacks. However, despite all this, our approach to cyber deterrence does not yet seem to have fundamentally altered the risk calculus for attackers. Some recent examples of significant cyber attacks are described below. 25