Why the U.S. Is Vulnerable to an Iranian Cyberattack | WSJ

U.S. tensions with Iran have escalated after the assassination of Gen. Qassem Soleimani, and experts are worried about retaliatory cyberattacks. Cybersecurity expert John Hultquist and WSJ's Dustin Volz discuss what new tactics hackers have at their disposal and whether the U.S. is prepared to defend itself. Photo illustration: Alexandra Cardinale.

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