Open-source software is everywhere now, but the Log4j flaw that affects Java enterprise applications is a reminder of what can go wrong in the complicated modern software supply chain.

Why you may already be at risk, how to detect and mitigate the Log4j vulnerabilities now, and how to improve your code security in the future.

There are 17,000 unpatched Log4j packages in the Maven Central ecosystem, leaving massive supply-chain risk on the table from Log4Shell exploits.

Even worse, in the case of Log4j, it may be extremely hard for even security professionals to understand whether this code is part of their applications and thus a potential risk.

A serious code execution vulnerability in Log4j has security experts warning of potentially catastrophic consequences for enterprise organizations and web apps.

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?

Ditch Log4j 2.15: DNS exfiltration & RCE possible Log4j 2.15.0 might contain even more severe vulnerabilities than the ones discovered so far, which is why 2.16.0 is by far a safer bet.

A sure-fire way to prevent exploitation of Log4j vulnerabilities has yet to appear, but these actions are your best bet for reducing risk.

If you're not certain whether your Java project is free from Log4j vulnerabilities, you should try this easy-to-use scanning tool immediately.

Log4j is a serious vulnerability that has swept across the IT landscape quickly. Here's a single command you can run to test and see if you have any vulnerable packages installed.