cyber asylum has dealt kakao talk a serious blow. an opposition party official was recently indicted for refusing police demands to stop a protest demanding that park resign. he says police then monitored messages he exchanged with about 3,000 people on kakao talk. the co-ceo apologized for causing concern to users. the head of an online business body says there needs to be a balance between conflict and interest. >> translator: trust is of the utmost importance for these services with huge numbers of users. but it's also important for businesses to follow the law. it's unfortunate that these two criteria collided on this issue. >> reporter: prosecutors say they won't monitor chats in realtime. but it's hard to win back trust once it's been lost. many users have switched to a german chat app called telegram. it had 50,000 users in early september. now 2 million people have signed up. >> translator: i won't go back to kako talk now that it lost the trust of the people. >> translator: it's tough to switch to another service. once you g