A recent Twitter user said you must upgrade your Apple devices to the latest version.

Two backdoor attack viruses have appeared consecutively recently. Just browsing an infected webpage will get you infected. Most account passwords, wallet mnemonics, private keys and other login information will be stolen silently.
Apple has urgently pushed iOS/iPadOS/macOS 26.3.1.a version these past two days. All the latest phone and computer systems are this version, specifically to temporarily fix these two 0day level backdoor viruses
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The company won't publicly say it's because of these two viruses, afraid of causing trouble for users who have already been infected or compromised.
Friends in the security circle are rushing to upgrade all operations-related Apple devices to the latest version.
Average users aren't sensitive to this information and the transmission path isn't long enough, so most people don't know yet. Once the assets in the account increase, the virus's backend control will discover it and take them away……
All
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devices must be upgraded. This time it's 0day level, extremely serious.