Log4j is a programming code written in Java and created by volunteers within the Apache Software Foundation to run across a handful of platforms: Apple's macOS, Windows and Linux.

UPDATE: SolarWinds has fixed a Serv-U bug discovered when attackers used the Log4j flaw to try to log in to the file-sharing software.

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 ...

The bug, known as Log4Shell, was in the ubiquitous open-source logging library Log4j and exposed a wide range of applications and services—from popular consumer and enterprise platforms to ...

Log4Shell is the latest hacker exploit rocking the internet, and it’s arguably the worst yet. The vulnerability is in an obscure piece of software used on millions of computers.

A bug in the ubiquitous Log4j library can allow an attacker to execute arbitrary code on any system that uses Log4j to write logs. Does yours?