Seoul: A law revision set to take effect next week in South Korea will tighten rules for data-hungry internet giants such as Netflix, Google and Facebook amid growing calls for stable services. Should they fail to meet the new rules, they could face an administrative fine of up to 20 million won ($18,350). Earlier this week, the Cabinet passed an amendment to the ordinance of the Telecommunication Business Act, stipulating that online content service providers are responsible for providing stable services to users. The new rules, set to take effect from December 10, apply to large online service companies, which account for 1 percent or more of the country's total data traffic in the last three months of a year, essentially targeting popular global online service providers as well as local players Naver Corp and Kakao Corp.