The #1 threat??!!
I actually would put the rise of high frequency and algo trading a bigger threat to finance markets, the repeal of Glass-Steagal much greater than that, the shift from resource based economics to fiat currency far greater than that, and the massive concentration of wealth that has taken place since King Ronald as the largest threat.
Cybersecurity does make a handy boogieman to scare to plebes while not upsetting the status quo, though