Cambodia has failed to dismantle much of its online scam industry despite a year-long crackdown that authorities said would eliminate it, according to an Amnesty International report that challenges official claims of success. The London-based rights group said it identified 86 scam compounds operating across Cambodia as of April, up from 53 a year earlier, and found evidence of state intervention at only 24 sites during the government’s campaign. That contrasts with official statements that...