New Episode of Stormcast Highlights Key Cybersecurity Threats and Best Practices

In this episode of Stormcast from Friday, December 5, 2025, Johannes Ullrich, reporting from Dallas, Texas, discusses several key topics in cybersecurity, with a particular focus on recent threats and best practices. The show highlights the work of an undergraduate intern, Jackie Noen, who analyzed an attack detected by a honeypot, a tool designed to attract cybercriminals and study their methods. This attack involved an SSH scan exploiting weak credentials, a common technique for taking control of vulnerable systems. What caught attention was that the originating IP address seemed to belong to an Indonesian governmental system. However, after a thorough analysis, Jackie concluded that it was likely a compromised device within that network, rather than a targeted or state-organized attack. This observation underscores an important reality in cybersecurity: an IP address alone is not sufficient to determine the true intention or origin of an attack. Attackers often use hijacked machines as relays to mask their identity, making the attribution of attacks complex.

Another hot topic covered in this episode is a critical vulnerability affecting React, a widely used JavaScript library for web interface development. Functional proofs of concept (PoCs) have been published, allowing attackers to execute arbitrary code on unpatched systems. Johannes emphasizes the urgency of the situation: if a system is vulnerable, it should be assumed that it has already been compromised. Although the Sans Internet Storm Center honeypots have not yet detected widespread exploitation, the ease with which these exploits can be adapted and deployed makes the threat imminent. To check if a system is vulnerable, he recommends consulting official resources, such as the React blog, or using reliable scanning scripts, while being cautious about their source. Traditional vulnerability detection tools, such as security scanners, have also integrated modules to identify this flaw.

The podcast then discusses a less publicized but equally concerning vulnerability affecting Array Networks VPN gateways, a lesser-known player compared to giants like Cisco or Fortinet. The Japanese cybersecurity agency has reported active exploitations of a recently patched flaw in the Array AGPN Gateway product. This vulnerability, related to a PHP flaw, allows attackers to upload a web shell, a malicious tool that gives them persistent access to the compromised system. This case illustrates a crucial point: smaller companies and lesser-known solutions are not immune to cyber threats. Attackers often target these systems because they are less monitored and less frequently updated. Johannes therefore emphasizes the importance of keeping all network equipment up to date, even those that do not make the headlines in specialized media.

In conclusion, this episode of Stormcast provides an overview of current cybersecurity threats while emphasizing the importance of vigilance and proactivity. Whether facing opportunistic attacks exploiting weak passwords, critical software vulnerabilities, or flaws in network equipment, the key lies in a rigorous approach: constant monitoring, rapid application of patches, and the use of reliable detection tools. For cybersecurity professionals and users concerned about protecting their systems, this information is essential for anticipating risks and strengthening defenses.