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Scam messages offering ships safe transit through Hormuz, security firm warns

Marisks said the fake notices demanded Bitcoin or Tether for “clearance” as hundreds of ships and about 20,000 seafarers remained stranded.

  • On Monday, Greek maritime firm Marisks warned shipowners that unknown actors posing as Iranian authorities sent fraudulent messages demanding cryptocurrency payments for passage "Clearance." through the Strait of Hormuz.
  • Hundreds of ships and about 20,000 seafarers remain stranded in the Gulf, where actors claim that after assessing eligibility via "Iranian Security Services," they will determine fees payable in Bitcoin or Tether.
  • Marisks believes at least one vessel hit by gunfire on Saturday, April 18, when Iran briefly opened the strait, was a victim of this cryptocurrency extortion scheme.
  • Reuters reported it was unable to verify the information or track firms that received the messages, while Tehran has provided no immediate comment on the fraud.
  • Blockades persist at Iranian ports as Iran has proposed transit tolls on vessels, with Tehran controlling the choke point amid ongoing ceasefire negotiations in the region.
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A number of shipping companies have received fraudulent text messages in recent days offering them safe passage through the Strait of Hormuz in exchange for payment in cryptocurrency. At least one carrier appears to have been duped. The Greek maritime risk management company MARISKS issued a warning about the fraudulent messages on Wednesday.

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Al-Monitor broke the news in Washington, United States on Tuesday, April 21, 2026.
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