To simply leave it at that, however, would be massively misleading. America's security agencies don't think you should do all your communicating by snail mail. Instead, they're specifically concerned with citizens using insecure means of communication, and are encouraging them instead to use secure, end-to-end encrypted options. Here's why.
Through these attacks, the FBI and CISA say hackers stole "a large amount of metadata," including, in limited cases, phone calls and messages.
Where encryption comes into play
While it doesn't appear at this time that hackers are routinely scraping and monitoring everything you text or say on the phone, the reason they've been able to access the contents of these communications at all is due to a lack of end-to-end encryption.
The issue is that traditional phone calls are not E2EE, and neither are SMS text messages. (When the FBI says "don't text," what they mean is don't use insecure texting methods like SMS.)
However, there are far too many instances where messages and call are not E2EE. Traditional phone calls, for example, are not E2EE. SMS, as noted above, is not E2EE. Even when you're trying to avoid SMS, it pops up: Since RCS requires an internet connection, for example, your phone might default to SMS when messaging in low-signal areas. The same goes for iMessage.
When in doubt, use a dedicated app
The only way to guarantee your messages and calls are encrypted end-to-end is to use a service that guarantees the practice with all communications.
There are apps with E2EE options that aren't E2EE by default. Messenger (formerly known as Facebook Messenger) now uses E2EE as the default, but existing chats (especially group chats) might still be unencrypted, so be careful. Telegram and Instagram also offers E2EE, but you have to choose to message with encryption. If you just download the apps and message away, you're not much better off than using SMS.
Remember, too, that this isn't just about messaging and calling with your phone. All your devices need to be considered. If you message or call people from your tablet or computer, make sure the apps you use are E2EE by default.
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