Our article for LSE Business Review is now live on the site: http://blogs.lse.ac.uk/businessreview/2017/11/28/hacking-the-market-systemic-contagion-from-cybersecurity-breaches/.
You can read (free) our paper, on which this article is based, in full here: Corbet, Shaen and Gurdgiev, Constantin, What the Hack: Systematic Risk Contagion from Cyber Events (September 7, 2017). Available at SSRN: https://ssrn.com/abstract=3033950.
Enjoy.