As you prepare your organization to prevent cyberattacks, it’s also critical to think through how to recover if the worst-case scenario happens. Long-term data-backup guidance consistently offered a 3-2-1 strategy — that is, three copies of your data on two different media with one copy stored offsite — but that is evolving. The gold standard is now 3-2-1-1-0, and here’s why that strategy is so important.