Biden Sees Risk of Russian Cyberattack on U.S. as Sanctions Bite

President Joe Biden warned Monday about new indications of possible Russian cyberattacks, pumping up the volume on weeks of growing concern about a possible Kremlin-ordered response to crushing sanctions over the invasion of Ukraine.

Biden reiterated those warnings, prompted by what he called “evolving intelligence that the Russian government is exploring options for potential cyberattacks.” He urged the the U.S. private sector: “Harden your cyber defense immediately.”

While the White House provided few details about the nature of the threat, the president’s message underscored the continuing threat in cyberspace for U.S. businesses and organizations. Cyberattacks have played a smaller role ...