An article published by Lior Ben-David on Medium revealing a logical weakness in the foreign-currency transfer system of Isracard, Israel's largest credit card company: instead of charging the customer a 2.9% conversion fee, the system credited the fee amount — meaning customers could effectively receive money from the company on every foreign-currency deposit.

According to Ben-David, Isracard was notified of the flaw but chose not to fix it. The piece demonstrates LBD's specialty in uncovering logical weaknesses and fraud paths in financial systems.

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