Washington (CNN) The North Korean government uses a shadowy network of cyberactors to conduct financial crimes on behalf of Kim Jong Un's regime that have attempted to steal over $1.1 billion in "particularly aggressive" attacks on global banks, according to a new report from a cybersecurity watchdog.

The report from FireEye says a group called APT38 has conducted operations against 16 organizations in at least 11 countries "sometimes simultaneously," which indicate the group has a "large, prolific operation with extensive resources."

The report also states that the probable number of institutions targeted by the group is likely higher and it has successfully stolen over $100 million through its operations since 2014.

Pyongyang's increasingly bold attacks in the virtual space have come in tandem with the hermit nation's rapidly progressing ballistic missile and nuclear programs. Those operations have continued despite ongoing diplomatic talks with the US and South Korea.

The Trump administration has made it clear that it will not lift economic sanctions that have been levied against North Korea until denuclearization is achieved, prompting Pyongyang to consider alternative sources of revenue.

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