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Log4j vulnerability: What you need to know to stay safe

13.12.2021 by Katie Lander

On Friday, a serious new vulnerability was published affecting Log4j, an open-source logging framework that’s widely used across many Java-based enterprise applications and web apps. If correctly exploited, hackers can use this to gain remote access to a business’ servers or IT systems. At 10/10 severity Log4j is one of the most serious IT vulnerabilities to have been discovered in recent memory.  Log4J is often installed on both Linux and Windows systems either directly, or often as a requirement of another package or system.  By default, Log4J is not included on customers’ UKFast servers, but if you are unsure if…