Pinterest’s journey toward becoming a fully HTTPS website opened a lot of doors, including a potentially profitable one for hackers. The social networking site this week announced that it would begin paying cash rewards through its bug bounty program, upping the stakes from the T-shirt it originally offered last May when it kicked off the Bugcrowd-hosted initiative. The news complements Pinterest’s full adoption of encrypted communication and traffic from its website. “I feel HTTPS will soon be seen as a requirement for anyone doing business online,” said Paul Moreno, security engineering lead