How to check if the server is attacked by Log4j (Log4Shell) or not

A critical exploit in the Java library was found not long ago, disrupting much of the Internet causing server administrators to try to fix it. The very vulnerable library, log4j, is used everywhere, so you’ll need to check your servers and make sure they’re up to date. How does the Log4J vulnerability work? As it turns out, the log4j vulnerability is by far one of the worst of the past few years, scoring a rare 10/10 on the CVSS scale and will haunt the entire internet for years to…

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