; (B) that are reasonably likely to result in, or materially contribute to, a significant threat to the national security of the United States; and (C) that have the purpose or effect of— (i) significantly compromising the provision of services by one or more entities in a critical infrastructure sector; (ii) harming, or otherwise significantly compromising the provision of services by, a computer or network of computers that support one or more such entities; (iii) causing a significant disruption to the availability of a computer or network of computers