High-profile defector Hwang Jang Yop survived numerous assassination attempts before dying of natural causes at the age of 87. Hwang, who had been one of the leading ideologues of the North's isolationist regime, escaped to South Korea in 1997. Just months before his death in 2010, Seoul authorities arrested two North Korean military officers over one of many plots to kill him.

The execution of Kim Jong Un's uncle Jang Song Thaek, once the second most powerful man in the isolated country, sent shock waves beyond North Korea's borders. Many media outlets wrongly reported that he was fed to hungry dogs, as punishment for his "betrayal" of the ruling family. In reality, he was shot, according to Pyongyang officials and South Korean intelligence.

In 2015, Seoul's security services reported that North Korean Defense Minister Hyon Yong Chol was executed by an anti-aircraft gun. However, National Intelligence Service (NIS) soon appeared to backtrack from the report, saying that Hyon might still be alive. Reports of other brutal executions, involving artillery shells and flamethrowers, have also been difficult to confirm.

North Korean defector and well-known dissident Park Sang Hak was also targeted by a Pyongyang-linked hitman. In 2011, South Korean authorities arrested a former North Korean commando over the plot to assassinate Park with a poison-tipped needle.

The estranged half-brother of North Korea's leader Kim Jong Un was reportedly poisoned by two women at a Kuala Lumpur airport. While details remained sketchy, it was widely believed the killers were sent by the North Korean regime. The 46-year-old Kim Jong Nam had been living abroad after falling from grace in 2001 for visiting Disneyland in Tokyo.