The Bank for International Settlements (BIS) has created a seven-point plan to help countries prevent cyber attacks on their developing digital national currencies, as around 130 countries explore central bank digital currencies (CBDC). The BIS has warned that CBDC systems are complex and have a large attack surface, and called for central banks to use the global "MITRE ATT&CK" database of past cyber attacks and adopt modern enabling technologies to support security and resilience.