The U.K. Would Respond to a Russian Cyberattack With the Weapon of Its Choice

  • Theresa May’s national security adviser briefed lawwakers
  • Mark Sedwill hinted at ancient Chinese manual on retaliation
Photographer: Andrey Rudakov/Bloomberg
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If Russia launches a cyberattack on the U.K., the government would likely respond using its own weapon of choice rather than a tit-for-tat online exchange, the country’s top national security adviser said.

“Let’s think about the Russian example: if we are hit with a cyber and propaganda attack, probably a deniable one, maybe from a non-state actor whom they will disavow all knowledge of -- even if it was on their behalf -- the correct response might not be in the same area of operations,” Mark Sedwill said in response to questions from lawmakers on Parliament’s National Security Strategy Committee in London Monday.