Netflix Inc. lost more than a million users in Spain in the first three months of 2023, according to market research group Kantar, a sign the streaming giant’s crackdown on password sharing could face opposition.

In early February, Netflix introduced a monthly fee of €5.99 ($6.57) for users in Spain who shared their login credentials between households, as well as technical measures to detect such sharing. The move came with a drop in user numbers of more than a million, two-thirds of whom used someone else’s password, according to Kantar’s research, which is based on surveys of household streaming habits.