Oppenheimer analyst Jason Helfstein recommends using the selloff today in shares of Facebook (FB) as a buying opportunity. The stock in afternoon trading is down 7% to $171.61.

The analyst believes a third party created an app leveraging Facebook’s universal login software tool, giving it access to user information and information on their connections. The data was then shared with Cambridge Analytica and leveraged for political purposes, which likely broke Facebook’s terms of service, Helfstein tells investors in a research note. The analyst says he has no reason to believe, as of now, that any laws were broken. Further, Helfstein points out that regulatory solutions “often take an inordinate amount of time.” He also believes that consumers have largely become desensitized to data-privacy related issues.

The analyst keeps an Outperform rating on Facebook with a $225 price target.