LGU+, 유심 무료 교체 13일 시행…"안내 문자 64% 발송 완료"

LGU+ is executing an emergency USIM replacement across its entire subscriber base to mitigate a security flaw where IMSI identifiers were predictably derived from phone numbers, enabling potential device cloning attacks. The incident underscores how seemingly minor technical decisions in carrier operations can create broad security risks affecting millions and demands industry-wide security reevaluation. The proactive replacement program and SUCI encryption implementation offer a blueprint for how telecom operators should respond to discovered vulnerabilities.