Cybersecurity

Muddy Waters Fights St. Jude Lawsuit Over Pacemaker Reports

  • Short seller says suit is an attack on free-speech rights
  • Fund manager accused of lying to profit from stock drop

St. Jude Medical corporate headquarters, in Little Canada, Minn.

Photographer: Glen Stubbe/Star Tribune via AP
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Muddy Waters LLC says St. Jude Medical Inc.’s defamation lawsuit over the short-seller’s reports questioning the safety of some pacemakers is an attack on free-speech.

The Carson Block-run fund, and others named in the suit, said research backs their claim that hackers can seize control of home remote transmitters to change the settings on pacemakers or to deliver a shock that induces a heart attack. The opinions were well-founded and of significant public interest, they said.