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How secure are my chat messages and conversations on WeChat? Can third-parties snoop or read my messages?
At WeChat, user privacy and data protection are our top priorities. WeChat considers user privacy and data protection not just our company's responsibility, but also a key part of our users' experience.

WeChat securely encrypts your sent and received messages between our servers and your device ensuring that third parties cannot snoop on your messages as they are being delivered over the internet. We do not permanently retain the content of any messages on our servers whether they are text, audio or rich media files such as photos, videos, or documents. Once all intended recipients have received your message, WeChat permanently deletes the content of the message on our servers and therefore third parties including WeChat itself are unable to view the content of your message once they are permanently deleted from our servers. At the same time, automated big data analysis of user data does not access our users' private data such as the content of their chat messages. As content of messages are not permanently stored to our servers nor are data-mined for commercial purposes, any claims that third-parties including members of the WeChat team are "snooping" on your chat messages are incorrect misunderstandings. To ensure the privacy of your messages, it's important to make sure that you follow some safety tips. Read more about how to best secure your WeChat experience on all of your devices.

In some cases, you may choose to have your message content either saved to the server or handled by a third-party service partner. For instance, when you select to add a message to Favorites, your message content will be automatically saved to our servers so that the message is available from within Favorites on any device that you log in to via WeChat. You may at any time de-select any message content from Favorites and they will be deleted from our servers. When you long-press a message and select Translate, the message may be translated via a third-party translation service, but the third-party shall not store the content of the message.