(ATTN: UPDATES with closing prices in headline, paras 1-3)
SEOUL, Oct. 17 (Yonhap) -- Shares in Kakao Corp., the operator of South Korea's dominant messaging app KakaoTalk, and its affiliates fell sharply Monday after a massive service disruption over the weekend stemming from a fire at a data center.
Kakao dropped 5.93 percent to close at 48,350 won (US$33) on the KOSPI, the country's main bourse.
Kakao Games, the company's gaming platform, shed 2.22 percent to end at 37,400 won, while Kakao Bank, a major internet-only lender, declined 5.14 percent to 16,600 won. Kakao Pay, its mobile payment and digital wallet service, retreated 4.16 percent to 34,600 won.
A fire at Kakao's data center near Seoul on Saturday caused the worst server outage for South Korea's dominant messenger and its internet portal Daum.
Nearly all online services provided from KakaoTalk, Kakao Pay and Kakao T, a transportation service app, suffered a massive malfunction.
Most of the disrupted services have been recovered, but some remained unavailable as of Monday afternoon.