White nationalists and supremacists are building thriving, macho communities across social media platforms and riling up thousands of followers on divisive issues like abortion, guns, immigration and LGBTQ rights.

Gun control advocates are making a new attempt to force the gun industry to comply with California's unique law requiring individual identifiers on all bullet casings, a mandate that has been toothless since it was approved in 2007. The law requires gun manufacturers to adopt micro-stamping technology on new types of handguns introduced in California.

Israel's Defense Ministry on Monday announced that it was tightening supervision over cyber exports — a move that follows a series of scandals involving an Israeli spyware company.