Newsworthy tips shed light on a matter of significant public interest. Do you have a news tip you want to share with our journalists? You can contact them directly by email, or you can send tips to our general newsroom inbox atCNBCtipline@versantmedia.com. If you have a tip you think might interest our investigative unit, please emailinvestigations@versantmedia.com.

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Signalis a free app that allows you to send messages or make calls with end-to-end encryption. Signal says that it does not retain any metadata. You can set it up to self-destruct messages automatically after a certain amount of time. You can read Signal's terms, security and instructions, and download the app onSignal's website.

Signal Contact Number: +1 (201) 730-2511

WhatsAppis a free app that allows you to send messages or make calls with end-to-end encryption. It's owned by Meta (the parent company of Facebook) and retains some data andshares some information with Meta. You can set it up to self-destruct automatically after a certain amount of time. You can read about WhatsApp's terms, security and instructions, and download the app on theWhatsApp website.

WhatsApp Contact Number:+1 (332) 239-0722