Facebook founder and CEO Mark Zuckerberg has voiced his support for Apple and the company's fight to protect data encryption. Speaking at Mobile World Congress in Barcelona, Zuckerberg added that backdoor access to platforms like iOS is not right.

Facebook already confirmed its support for Apple as a company in a statement released last week, in which it warned the FBI's demands "would create a chilling precedent and obstruct companies' efforts to secure their products." Now Zuckerberg is adding his personal support.

"We're sympathetic with Apple on this one. We believe in encryption," he said. "I expect it's not the right thing to try to block that from the mainstream products people want to use. And I think it's not going to be the right regulatory or economic policy to put in place."

This follows a court order issued to Apple that requested the company's help in unlocking an iPhone belonging to one of the San Bernardino attackers. CEO Tim Cook was quick to confirm that the company would fight it in an effort to protect user privacy.

Like Apple, Zuckerberg supports encryption but also the efforts of the FBI to protect innocent people. He added Facebook has "a pretty big responsibility" to prevent terrorism in any way it can.

"We certainly do have very strong policies on this that if there's any content that's promoting terrorism or sympathizing with ISIS or anything like that, we'll … get those people off the service," he said. "We don't want people that are doing that stuff on Facebook."