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HomeTopics 5VulnerabilityLog4j Still Lurks: A Monster Not Yet Tamed

Log4j Still Lurks: A Monster Not Yet Tamed


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Remember Log4Shell, the vulnerability that sent shivers down the spines of IT professionals worldwide?

While the initial panic may have subsided, its shadows linger, proving that this monster is far from slain. New variants and exploitation techniques continue to emerge, reminding us that vigilance against this threat remains paramount.

Why We Should Still Worry:

The initial Log4Shell exploit, discovered in late 2021, allowed attackers to remotely execute malicious code on vulnerable systems. While widespread patching efforts mitigated the immediate danger, new variants have surfaced, like the recently discovered “GhostShell.” This strain bypasses existing mitigations, posing a renewed threat to unpatched systems.

The danger doesn’t end there. Researchers are uncovering novel ways to exploit the vulnerability, even through seemingly innocuous avenues like logging innocuous-looking strings. These novel techniques highlight the adaptability and persistence of this threat, demanding ongoing attention and proactive defense.

The Current Landscape:

Although cybercriminals haven’t launched large-scale Log4j attacks since the initial wave, the potential for widespread exploitation remains. Numerous reports indicate attackers are actively scanning for vulnerable systems, ready to pounce on any unpatched instance.

This creates a critical situation. Organizations still using outdated software versions or struggling to deploy patches remain at significant risk. The longer they wait, the greater the chance of attackers gaining a foothold and causing lasting damage.

Taking Action: Don’t Be the Monster’s Next Meal:

So, what can we do? The answer is simple: patch, patch, patch! Make sure all systems using vulnerable versions of Java libraries are updated to the latest patched versions. This includes not just core Java runtime environments but also any applications or services relying on potentially vulnerable libraries.

Beyond patching, consider implementing additional security measures like intrusion detection/prevention systems (IDS/IPS) and security information and event management (SIEM) solutions. These can help detect and alert you to potential Log4j-related attacks before they cause significant damage.


Log4j may not be the headline-grabbing monster it once was, but its threat remains real and potent. Ignoring the vulnerability leaves you vulnerable to exploitation. Be proactive, prioritize patching, and implement additional security measures. Remember, in the cybersecurity game, vigilance is your best weapon. Don’t let the Log4j monster feast on your systems – take action and secure your digital landscape today.

Ouaissou DEMBELE
Ouaissou DEMBELEhttps://cybercory.com
Ouaissou DEMBELE is an accomplished cybersecurity professional and the Editor-In-Chief of cybercory.com. He has over 10 years of experience in the field, with a particular focus on Ethical Hacking, Data Security & GRC. Currently, Ouaissou serves as the Co-founder & Chief Information Security Officer (CISO) at Saintynet, a leading provider of IT solutions and services. In this role, he is responsible for managing the company's cybersecurity strategy, ensuring compliance with relevant regulations, and identifying and mitigating potential threats, as well as helping the company customers for better & long term cybersecurity strategy. Prior to his work at Saintynet, Ouaissou held various positions in the IT industry, including as a consultant. He has also served as a speaker and trainer at industry conferences and events, sharing his expertise and insights with fellow professionals. Ouaissou holds a number of certifications in cybersecurity, including the Cisco Certified Network Professional - Security (CCNP Security) and the Certified Ethical Hacker (CEH), ITIL. With his wealth of experience and knowledge, Ouaissou is a valuable member of the cybercory team and a trusted advisor to clients seeking to enhance their cybersecurity posture.


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