Hackers have pilfered billions of dollars by breaking into cryptocurrency exchanges and creating fake identities to get remote tech jobs at foreign companies, the report found.

North Korean leader Kim Jong Un said military brotherhood between his country and Russia would "advance non-stop", state media KCNA reported on Friday.

Around 20 North Korean soldiers crossed into the Demilitarized Zone (DMZ) border last weekend, prompting South Korea to fire warning shots until they retreated, the Joint Chiefs of Staff (JCS) said Thursday.

At a military parade earlier this month, Kim Jong-un unveiled some of his military's newest weapons, including what appeared to be a short-range ballistic system fitted with hypersonic glide vehicles.