Log4j, an open source project, allows developers to control which log statements are output with arbitrary granularity. It's fully configurable at runtime by using external configuration files.

Logging may not always be the best diagnostic tool for debugging. When logging is used in cases where there is a better alternative, it is more likely to lead to log level inflation. Reducing or ...

Log4j is everywhere One of the major concerns about Log4Shell is Log4j’s position in the software ecosystem. Logging is a fundamental feature of most software, which makes Log4j very widespread.

Log4j flaw attack levels remain high, Microsoft warns Organizations might not realize their environments are already compromised. Written by Liam Tung, Contributing Writer Jan. 4, 2022 at 5:11 a.m. PT ...

Systems and services that use the Java logging library, Apache Log4j between versions 2.0 and 2.14.1 are all affected, including many services and applications written in Java.

They instead chose to override log4j and customize it for non-blocking, asynchronous logging. The log4j framework is largely unchanged; only the areas that affected scalability were altered.

For users of open source software, it means checking to see if it relies on Log4j or Log4j2 for logging. This is a breaking story. Updates will follow if more information becomes available.