KILL CHAIN: THE CYBER WAR ON AMERICA’S ELECTIONS (2020) 9 p.m. on HBO. In the Emmy-nominated 2006 documentary “Hacking Democracy,” the filmmakers Simon Ardizzone and Russell Michaels presented evidence for the unreliability of electronic voting machines. This new doc, directed by Ardizzone, Michaels and Sarah Teale (an executive producer of “Hacking Democracy”), follows the Finnish computer expert Harri Hursti, who makes the case that America’s election systems are still critically vulnerable. “The problem is,” Hursti says early on, “once you understand how everything works, you understand how fragile everything is, and how easy it is to lose this all.”

MALCOLM X (1992) 8 p.m. on TCM. A couple years after collaborating on “Mo’ Better Blues,” Denzel Washington and Spike Lee joined forces again for this three-hour biographical drama about Malcolm X, played here by Washington. Based in part on “The Autobiography of Malcolm X,” the film chronicles Malcolm X’s life before and during his time as a civil-rights leader. “Spike Lee has attempted the impossible and almost brought it off,” Vincent Canby wrote in his review for The Times in 1992. “His new ‘Malcolm X’ is not exactly the equal, or even the equivalent, of the book, but it’s an ambitious, tough, seriously considered biographical film that, with honor, eludes easy characterization.”