Using Linux?
Do this: Patch ASAP. If patches do not exist for your current distribution, work arounds exist that should be researched, tested, and applied.
Why: A recently discovered vulnerability in a system tool called Polkit gives attackers unfettered root privileges on machines running most major distributions.
Additional Info: https://threatpost.com/linux-bug-in-all-major-distros-an-attackers-dream-come-true/177996/
Using MacOS or iOS/iPADOS ?
Do this: Apply Apple's latest security patches.
Why: Apple acknowledged an active exploitation named which is a memory corruption issue that could be exploited by a malicious app to execute arbitrary code with kernel privileges.
Additional Info: https://threatpost.com/apple-zero-day-security-exploited/178040/
Using Android?
Do this: Do not reply to SMS messages coming from unknown sources.
Why: Flubot and Teabot have launched Malware campaigns targeting android devices through SMS messages.
Additional Info: https://thehackernews.com/2022/01/widespread-flubot-and-teabot-malware.html/
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