曾大爷识破骗局，黄某、廖某当场被抓！

Group 1 - The article describes a case of telecom fraud where an elderly man, Mr. Zeng, was targeted by scammers posing as his grandson's friend, claiming that his grandson needed 30,000 yuan to "resolve" a traffic violation issue [1][3][5] - Mr. Zeng initially complied and withdrew 30,000 yuan from the bank but later recalled a community anti-fraud campaign, which prompted him to verify the situation with his grandson [3][5] - After confirming his grandson was safe, Mr. Zeng reported the incident to the police, who then devised a plan to catch the suspects by instructing him to maintain contact with them [5][7] Group 2 - The police successfully apprehended two suspects, Huang and Liao, when they arrived to collect the cash, and both admitted to their involvement in the fraud [7][8] - Following the incident, the police returned the 30,000 yuan to Mr. Zeng, who expressed gratitude for the anti-fraud education that helped him avoid falling victim to the scam [10] - The article emphasizes the importance of vigilance against telecom fraud, particularly for the elderly, and advises individuals to verify any urgent financial requests from relatives through direct communication [10]