{"id":"AIBD-1004","title":"The Korea Communications Commission finds that the three mobile carriers' intelligent spam filters blocked 97.7% of its test spam texts in late 2022","summary":"In test sends by Korea's regulator, the three mobile carriers' free intelligent spam filters blocked 97.7% of illegal spam texts in the second half of 2022, up from 89.5% in late 2019.","date_observed":"2023-03-31","date_basis":"source publication","date_precision":"day","benefit_status":"reported","source_collection":null,"source_entry":null,"account":"SK Telecom, KT and LG Uplus give subscribers a free intelligent spam blocking service that filters text messages. The Korea Communications Commission and the Korea Internet & Security Agency (KISA) publish spam statistics twice a year. To measure blocking, they send test texts built from illegal spam reported to KISA. After 26 weeks of test sends in the second half of 2019, the carriers blocked 89.5% of spam texts on average. The Commission reported that this was the highest rate it had published since 2012 and credited spam-information sharing among the carriers from October 2019. The average reached 96.2% in the first half of 2020. In the second half of 2022, with 200 test texts sent each month, it reached 97.7%. The releases do not describe how the filters work. In February 2024 the Commission reported that KT demonstrated AI-based spam filtering that it had recently introduced. In April 2024 it called the services intelligent (AI) spam blocking services. It also wrote that the carriers should strengthen their filtering, as illegal spam reaching users had risen.","category":"aggregate result","unexpected":false,"purpose":"SK Telecom, KT and LG Uplus built their intelligent spam blocking services to filter spam text messages for subscribers free of charge.","system":"Intelligent spam blocking services (지능형 스팸차단 서비스) of SK Telecom, KT and LG U+","model_version":null,"developer":"SK Telecom, KT and LG Uplus","deployer":"SK Telecom, KT and LG Uplus (free service for subscribers)","location":"South Korea (nationwide mobile networks)","domain":"Telecommunications / spam and fraud prevention","segment":null,"benefit_type":"Increased Product Safety","work_activities":["4.A.1.b.1","4.A.1.a.2"],"taxonomy_note":null,"registry_ids":{},"ratings":[{"group":"personal","depth":2,"reason":"In the regulator's test sends, the free filters blocked 97.7% of illegal spam texts in the second half of 2022, up from 89.5% in the second half of 2019."}],"ai_role":{"status":"unassessed","statement":"The Commission measured each carrier's service as a whole, with no comparison of filtering with and without machine learning. The releases do not describe how the filters work. The Commission credited the 2019 rise to spam-information sharing among the carriers. It reported in February 2024 that KT had recently introduced AI-based filtering, so the filters tested from 2019 to 2022 may not all have used machine learning."},"evidence":[{"kind":"regulatory document","citation":"Korea Communications Commission (방송통신위원회) and Korea Internet & Security Agency. 휴대전화 음성스팸 줄고, 문자스팸 늘어 [Voice spam on mobile phones falls, text spam rises], press release on the survey of spam in the second half of 2022 (「2022년 하반기 스팸 유통현황」), 31 March 2023.","title":"휴대전화 음성스팸 줄고, 문자스팸 늘어","url":"https://www.kmcc.go.kr/user.do?mode=view&page=A05030000&dc=K05030000&boardId=1113&boardSeq=54820","date":"2023-03-31","written_by":"independent","quote":"한편, 이동통신사의 문자스팸 차단율 조사는 이통3사가 무료로 제공 중인 '지능형 스팸차단 서비스*'의 문자스팸 차단율을 측정하는 것으로, '22년 하반기 차단율은 평균 97.7%로 전기 대비 0.8%p 상승한 수치로 나타났다."},{"kind":"regulatory document","citation":"Korea Communications Commission (방송통신위원회) and Korea Internet & Security Agency. 방통위, 「2020년 상반기 스팸 유통현황」 조사 결과 발표 [The Commission announces its survey of spam in the first half of 2020], press release, 29 September 2020.","title":"방통위, 「2020년 상반기 스팸 유통현황」 조사 결과 발표","url":"https://www.kmcc.go.kr/user.do?mode=view&page=A05030000&dc=K05030000&boardId=1113&boardSeq=50090","date":"2020-09-29","written_by":"independent","quote":"이통3사의 '지능형 스팸차단서비스' 차단율을 조사한 결과, 문자스팸 차단율은 평균 96.2%로 '19년 하반기 대비 6.7%p 증가(89.5%→96.2%)한 것으로 나타났다."},{"kind":"regulatory document","citation":"Korea Communications Commission (방송통신위원회). 스팸 10건 중 9건은 막는다...문자스팸 차단율 89.5% [Nine in ten spam texts blocked, text spam blocking rate 89.5%], press release on the survey of spam in the second half of 2019 (「2019년 하반기 스팸 유통현황」), 25 March 2020.","title":"스팸 10건 중 9건은 막는다...문자스팸 차단율 89.5%","url":"https://www.kmcc.go.kr/user.do?mode=view&page=A05030000&dc=K05030000&boardId=1113&boardSeq=48691","date":"2020-03-25","written_by":"independent","quote":"2019년 하반기 총 26주 동안 스팸 문자메시지를 전송한 후 이동통신사의 문자스팸 차단율을 측정한 결과, 10건 중 평균 9건(차단율 89.5%)*을 차단해 주는 것으로 나타났다."},{"kind":"regulatory document","citation":"Korea Communications Commission (방송통신위원회) and Korea Internet & Security Agency. 방통위, 「2023년 하반기 스팸 유통현황」 발표 [The Commission announces its survey of spam in the second half of 2023], press release, 5 April 2024.","title":"방통위, 「2023년 하반기 스팸 유통현황」 발표","url":"https://www.kmcc.go.kr/user.do?mode=view&page=A05030000&dc=K05030000&boardId=1113&boardSeq=60499","date":"2024-04-05","written_by":"independent","quote":"각 이동통신사에서도 '지능형(AI) 스팸차단서비스'의 스팸 필터링 정책 강화와 차단성능 개선 등 불법스팸의 실질적 차단율 향상에 노력을 더욱 기울여야 할 것으로 분석된다.","supports_benefit":false},{"kind":"regulatory document","citation":"Korea Communications Commission (방송통신위원회). 방통위(이상인 부위원장), 국민생활 불편을 야기하는 불법스팸 차단을 위해 이동통신사(KT) 현장점검 [The Commission's vice chairman inspects KT's blocking of illegal spam], press release, 20 February 2024.","title":"방통위(이상인 부위원장), 국민생활 불편을 야기하는 불법스팸 차단을 위해 이동통신사(KT) 현장점검","url":"https://www.kmcc.go.kr/user.do?mode=view&page=A05030000&dc=K05030000&boardId=1113&boardSeq=59778","date":"2024-02-20","written_by":"independent","quote":"이날 최근 도입한 인공지능(이하 'AI') 기반 스팸 필터링 기술을 시연하고 적극적인 노력을 통해 스팸신고 비중을 줄이고 있다고 밝혔다.","supports_benefit":false}],"replication":{"produced_by":["The three carriers provided the blocking service to subscribers free of charge.","From October 2019 the carriers shared spam information with one another, under a policy agreed with the Commission."],"must_hold":["The filters must keep up with spam that changes to get around blocking systems.","The carriers must keep strengthening their filtering policies and blocking performance."],"echoes":[]},"paired_incident":null,"headline":"Korean carriers' *intelligent spam blocking* stops 97.7% of test spam","metric":"blocked 97.7% of illegal spam texts","comparator":{"against":"The same services' average blocking rate in the second half of 2019","before":"89.5%","after":"96.2% in the first half 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The Korea Communications Commission and the Korea Internet & Security Agency (KISA) publish spam statistics twice a year. To measure blocking, they send test texts built from illegal spam reported to KISA. After 26 weeks of test sends in the second half of 2019, the carriers blocked 89.5% of spam texts on average. The Commission reported that this was the highest rate it had published since 2012 and credited spam-information sharing among the carriers from October 2019. The average reached 96.2% in the first half of 2020. In the second half of 2022, with 200 test texts sent each month, it reached 97.7%. The releases do not describe how the filters work. In February 2024 the Commission reported that KT demonstrated AI-based spam filtering that it had recently introduced. In April 2024 it called the services intelligent (AI) spam blocking services. It also wrote that the carriers should strengthen their filtering, as illegal spam reaching users had risen.","replication":{"produced_by":["The three carriers provided the blocking service to subscribers free of charge.","From October 2019 the carriers shared spam information with one another, under a policy agreed with the Commission."],"must_hold":["The filters must keep up with spam that changes to get around blocking systems.","The carriers must keep strengthening their filtering policies and blocking performance."],"echoes":[]}}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["account","replication"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"}},"summary":{"total":91,"addressed":91,"known":29,"reviewed":2,"reviewed_complete":2,"reviewed_partial":0,"record_mapped":27,"review_not_assessed":62,"not_assessed":0,"complete":false,"by_state":{"value_present":29,"not_reported":0,"unresolved":62,"not_assessed":0,"not_applicable":0,"withheld":0,"source_unavailable":0}}},"presentation_version":"a68089ab17661433a7352967513760d64700faa2d6d0b4c3b0bd0d78a617616b"}