Abstract
Cyberterrorism has come to be one of the most threatening forms of
terrorism in 2019. In the face of the negative implications cyberattacks can
have on affected firms and consumers, this article focuses on the flip side of
the coin: I hypothesize that cyberattacks can produce abnormal positive returns
for the stock prices of insurance and security companies. Heretofore
practically ignored by most businesses, companies that specialize in insurance
and security dealing with cyberterrorism are experiencing increased positive
interest and attention. I conducted an event study analysis to investigate how
the stock prices of insurance and security companies changed one day and one
week after major cyberattacks on large firms. Such cyberattacks investigated
range from the 2013 Yahoo attack to the globally destructive Petya Ransomware
attack. Using the P-value as a measure of significance, I found that, on
average, the companies realized a consistent, positive abnormal return in 11 of
the 15 events one day after an attack. This evidence supported my hypothesis as
investors understand that increased cyber activity results in increased
cyber-awareness. Both insurance and security companies will likely increase
premiums and experience higher quarterly revenues. Moreover, it was found that
security companies experienced more positive, abnormal returns than insurance
companies, as consumers gravitate towards security in hopes of greater
protection.
JEL classification numbers: G22
Keywords: cyberterrorism, cyber awareness, cybersecurity, stock
market, empirical analysis, abnormal returns, P-value