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Informed Trading And Cybersecurity Breaches, Joshua Mitts, Eric L. Talley Jan 2019

Informed Trading And Cybersecurity Breaches, Joshua Mitts, Eric L. Talley

Faculty Scholarship

Cybersecurity has become a significant concern in corporate and commercial settings, and for good reason: a threatened or realized cybersecurity breach can materially affect firm value for capital investors. This paper explores whether market arbitrageurs appear systematically to exploit advance knowledge of such vulnerabilities. We make use of a novel data set tracking cybersecurity breach announcements among public companies to study trading patterns in the derivatives market preceding the announcement of a breach. Using a matched sample of unaffected control firms, we find significant trading abnormalities for hacked targets, measured in terms of both open interest and volume. Our results …


Introduction To The Symposium On Cyber Attribution, Monica Hakimi Jan 2019

Introduction To The Symposium On Cyber Attribution, Monica Hakimi

Faculty Scholarship

This symposium explores some of the legal issues surrounding the attribution of cyber conduct to states. Relative to states’ other activities, cyber conduct poses particularly thorny attribution challenges. States that engage in such conduct often use technology to obscure their identities or the full effects of their operations. The attribution challenges in turn raise difficult questions about how victim states should be allowed to respond — whether in kind, with other retorsions or countermeasures, with kinetic force, or by doing nothing at all. For example, how confident must a victim state be that it has correctly identified the source of …