1.Date of occurrence of the event:2021/11/29 2.Company name:President Securities Corporation 3.Relationship with the Company (please enter ”the company itself” or ”subsidiaries”):the company itself 4.Reciprocal shareholding percentage:NA 5.Name of the reporting media:various reporting media 6.Content of the report:PSC's’sub-brokerage systems are suspected to be hacked and the Company confirmed foreign stock trading has been handled manually. 7.Cause of occurrence:NA 8.Countermeasures:NA 9.Any other matters that need to be specified: PSC had detected one of its client’s unusual activities relating to Hong Kong stock orders around 3 pm on November 25, 2021. After proactive and comprehensive inspection, PSC had found a total of 7 client’s sub-brokerage account having unusual activities and had notified the clients to renew passwords timely and had blocked the suspicious network segment. To protect clients’ rights and interests, PSC had temporarily suspended the suspicious foreign stock’s trading. PSC had reported the case to the Criminal Investigation Bureau (”CIB”) of the Ministry of Interior Affairs and to the authority in accordance with internal rules and policy. PSC valued information security protection highly and will do the best to protect clients’ rights.