Abolished guidelines limited Seoul's development of ballistic missiles to a range of 800 kilometers or 500 miles
They want it to give up its nuclear and ballistic missile programs
Microsoft had already accused Pyongyang of similar hacking attempt last November
Move condemned by rights activists as violation of freedom of speech
Health authorities are stepping-up efforts to prevent test sites from becoming coronavirus hotspots
Kim Jong Un has offered a rare apology for the death
Call comes hours after Pyongyang threatened to demolish a liaison office and take military action against its rival