The psychological consequences of the global COVID-19 pandemic are just now starting to be understood; however, the behavioral consequences are less understood. Thus, the current report examined whether cyberbullying processes and frequency are affected by the COVID-19 pandemic. We compared US adult participant data from six months before the start of the pandemic (July 2019; n = 181) to data collected in the middle of the pandemic (May, 2020; n = 173) to determine if there are any significant differences in anonymity perceptions, belief in the irrelevance of muscularity for online bullying (BIMOB), cyberbullying attitudes, and cyberbullying perpetration. Results showed that there were significant increases in BIMOB, cyberbullying attitudes, and cyberbullying perpetration during the pandemic, but no significant change for anonymity perceptions. Further, the relationships between several variables germane to cyberbullying perpetration prediction were stronger during the pandemic than before. Overall, these findings add to our understanding of the behavioral impact the COVID-19 pandemic has on US adults.