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Iranian hacker group MuddyWater, allegedly linked to the country's state intelligence service, continues to exploit the Log4j vulnerability to gain access to corporate networks in Israel amid an ongoing proxy war between countries, according to new research.

A high-severity flaw in Apache Log4j has set off a storm of cyberattacks - and some unusual defensive tactics by security vendors.

The Log4Shell vulnerability carries the highest severity rating and is one of the worst of 2021. Here's what to do about it.