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%MetaPlatforms ($META ) is testing expanded encryption features for %Messenger and %Instagram as it tries to enhance the security of its social media platforms.

The new encryption measures come days after the Silicon Valley-based company came under criticism for providing messages to police in abortion-related cases in the U.S.

The parent company of %Facebook said it plans to make chats end-to-end encrypted by default for some Messenger users, and to fully encrypt calls on the social media site.

The company also said it plans to expand end-to-end encrypted messages and calls on Instagram.

Meta Platforms added that it's testing a “secure storage” option for end-to-end encrypted conversations, which have been stored only on users' devices. The new storage service, which will be featured on Messenger, will allow users to back up their conversations with Facebook if they lose a device.

The company said that, going forward, it won't have access to customers’ messages in secure storage. Meta said it is only able to see encrypted messages in live conversations or in secure storage if users give permission.

The technology giant has been working for years to expand end-to-end encryption on its platforms, with the promise of ensuring that messages and chats are only viewable by members of the conversation and not accessible by the company or unknown people.

%WhatsApp, which is also owned by Meta Platforms, already enables end-to-end encryption by default.

So far this year, Meta Platforms’ stock is down 48% and trading at $177.49 U.S. per share.