The article surveys major online thefts against financial institutions and cryptocurrency exchanges over the previous decade, estimating that attackers targeted more than $1 billion. It notes that most incidents remain unattributed, but says a significant number of DPRK-linked attacks have been identified by security groups. The supported examples include the Coincheck and Mt. Gox cryptocurrency thefts and an attempted SWIFT transfer attack against Malaysia's central bank, illustrating why internet-accessible financial systems and exchanges remain high-value targets.