How can I, a proficient web developer but one with little experience working directly with its underlying infrastructure, help in whatever effort is being down to thwart this and related attacks? I feel a moral obligation to help as these attacks seem a grave threat to our economy and could cause unrest given the current political climate. Thanks.
Read all the analysis you can to form a better understanding of how this all works. Use that information to design and run more resilient services in the future. Teach what you have learned to others.