Tags cryptography Vietnamese team wins data security contest Monday, Jul 27, 2015 Pwntheworld, a team from Viet Nam, won Whitehat Contest 10, a competition for the information security community. CTB Locker ransomware threatens Vietnamese computers Monday, Jan 26, 2015 There are currently more than 1,300 computers in Viet Nam infected with the CTB Locker trojan-ransom and the number is rising.