Kristoffer apparently discovered that hitting the space button several times and then hitting enter allowed him to bypass the Xbox Live password verification screen after an incorrect password was entered.
"I was like, yea!" he said.
Microsoft listed Kristoffer among its March 2014 Security Researchers, recognizing him as having "helped make Microsoft online services safer by finding and reporting security vulnerabilities."
The company said in a statement, "We're always listening to our customers and thank them for bringing issues to our attention. We take security seriously at Xbox and fixed the issue as soon as we learned about it."
To thank him for finding the vulnerability, Microsoft gave Kristoffer four games, $50, and a year-long subscription to Xbox Live.
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