Underwriters are preparing to press cryptocurrency clients on their security defenses and their exposure to Binance after the largest digital-asset theft on record, according to industry executives and experts, a review that could reshape how crypto risks are priced and written.

The $6.3 billion heist at Binance, disclosed last week, has been blamed by the FBI on a North Korea-linked group. Insurers are not expected to pull back broadly from the sector or shrink the pool of available coverage, but they are likely to ask harder questions when policies come up for renewal, typically on an annual cycle.

“Insurers will be asking questions specific to Binance. Their first question will be very simple: what is your exposure to them and do you…