AKIPRESS.COM - 19-year-old Stephen Arthuro Solis-Reyes from London, Ontario was accused of hacking into the Canadian Revenue Agency (CRA)'s website last Friday by the Royal Canadian Mounted Police.
The RCMP say Mr Solis-Reyes then stole 900 social insurance numbers.
In a separate development, UK parenting site Mumsnet has provided fresh details about how it fell victim to the bug.
The site has published a post explaining how a hacker hijacked several accounts last week - including one belonging to Mumsnet's founder Justine Roberts - after exploiting the cryptology flaw to expose the owners' credentials.
"I hope the actions of hijacking Justine's account help draw attention to how big a deal this is," the hacker wrote on the social network.
"I suspect a lot of people would not have taken it seriously otherwise. Be thankful that the person who got access to the server information was kind enough to let you all know (and at least try and be funny with it) instead of simply sitting on the information."