Ryu Seong-ho, a financial fraud prevention officer at Toss Bank Our Neighborhood, is providing prevention education to seniors at Songpa Silbuttrak Senior Welfare Center in Seoul on the 23rd. (Left) Prevention officer Jeong Da-bok is practicing detecting malicious apps with students. Provided by Toss Bank “You don’t have to know what a phishing site is. Instead, just remember these three principles: ‘Be suspicious, hang up, and check.’” A former veteran who retired as a police officer in 2017...