BlackBerry chief executive John Chen says his company will take legal action against an unnamed individual who allegedly leaked future product information. (CBC News)

BlackBerry CEO John Chen says he's fighting against future product leaks by taking legal action against an individual who allegedly leaked secret company information to the public.

The head of the Waterloo smartphone company alleges that an unnamed person posed as an employee of a partner wireless carrier and then stole confidential details about a future BlackBerry product and leaked them.

"I recognize that, in some cases, the leaks reflect people’s genuine interest in BlackBerry," Chen wrote in a short blog post posted on the company's website.

"But, when curiosity turns to criminality, we must take strong action," he wrote.  

"We will always take appropriate actions to prevent leaks from happening and in some cases this means prosecuting individuals — internally or externally — who leak confidential information."