BOJ board member Nakajima flags cyber risk to financial system

Cyber risk entering a central banker's public remarks matters because it reframes operational resilience as a financial-stability issue rather than an IT concern, and Japan's regulator has a track record of treating such warnings as preludes to supervisory attention. The immediate audience is domestic financial institutions and the operators of payment and settlement infrastructure, though the concern is generic enough to travel across jurisdictions. What is worth watching is whether this stays a rhetorical flag or gets translated into concrete supervisory expectations for the private sector; Nakajima's comments only confirm the BOJ's internal defenses, not any external mandate.