Why Proactive Security Trumps Reactive Security

A recent CISA alert highlights a critical vulnerability in Delta Electronics' DTNSoft, a software widely used in industrial control systems. Exploiting this flaw could allow attackers to execute arbitrary code, potentially disrupting operations. ([cisa.gov](https://lnkd.in/gmjKBPSD)) For SMBs, such vulnerabilities pose significant risks, including operational downtime and financial losses. Ensuring all software is up-to-date is crucial to mitigate these threats. To protect your systems, promptly apply the latest security patches provided by Delta Electronics. Regularly monitoring and updating your software can prevent potential exploits. Read the full advisory here: ([cisa.gov](https://lnkd.in/gmjKBPSD)) How often does your organization review and apply software updates? #CybersecurityTip #BusinessSecurity #TechLeadership

A recent CISA alert highlights vulnerabilities in Delta Electronics' EIP Builder software, widely used in industrial control systems. ([cisa.gov](https://lnkd.in/gmjKBPSD)) Exploiting these flaws could allow attackers to execute arbitrary code, potentially disrupting critical operations. For SMBs relying on such systems, this underscores the importance of timely software updates to mitigate security risks. To protect your systems, ensure all software is updated to the latest versions. Read the full advisory here: ([cisa.gov](https://lnkd.in/gmjKBPSD)) How often does your organization review and apply software patches? #CybersecurityTip #BusinessSecurity #TechLeadership

A recent CISA advisory highlights critical vulnerabilities in Honeywell's Experion PKS, including an integer underflow flaw (CVE-2025-2523) with a CVSS score of 9.4, potentially leading to remote code execution. ([cisa.gov](https://lnkd.in/gr9ihyRh)) For SMBs utilizing industrial control systems, such vulnerabilities can result in operational disruptions and significant financial losses. To mitigate these risks, ensure your systems are updated to Experion PKS R520.2 TCU9 Hot Fix 1 or R530 TCU3 Hot Fix 1. Read the full advisory here: ([cisa.gov](https://lnkd.in/gr9ihyRh)) How often does your organization review and apply security patches to its control systems? #CybersecurityTip #BusinessSecurity #TechLeadership

A recent CISA advisory highlights a critical vulnerability in Delta Electronics' COMMGR software, which could allow attackers to remotely execute arbitrary code. ([cisa.gov](https://lnkd.in/gvzwmDSh)) For SMBs, such vulnerabilities can lead to significant operational disruptions and financial losses. Ensuring that all software is up-to-date is crucial to maintaining a secure environment. To mitigate this risk, update your Delta Electronics COMMGR software to version 2.1.0.20 or later. Read the full advisory here: ([cisa.gov](https://lnkd.in/gvzwmDSh)) How often does your organization review and apply software updates? #CybersecurityTip #BusinessSecurity #TechLeadership

X.509 Certificate Smuggling: Executables Delivered via TLS Certificates A new proof-of-concept highlights a novel technique for delivering executable payloads through X.509 TLS certificates. This approach avoids traditional delivery mechanisms entirely - no file downloads, no direct payload URLs. How it works: -> A binary executable is converted to a HEX string and embedded into a certificate extension (OID field). -> During an HTTPS connection, the client extracts the HEX, decodes it, and executes it - potentially all in memory. -> The certificate appears legitimate to most inspection tools, and no executable touches disk unless explicitly written. Why this matters for red teams: -> No file download means NGFWs and traditional proxies do not see a PE file being transferred. -> The TLS handshake is used as the delivery channel, which blends into normal encrypted traffic. -> The server hosting the certificate can appear fully legitimate, making traffic analysis difficult for defenders. -> The payload can be executed directly from memory, reducing forensic artifacts. Detection considerations: -> The payload is still a PE file, with the MZ header intact. -> Open-source detection tools like Suricata do not typically inspect OID fields in certificates, leaving a visibility gap. -> The HEX payload can be further obfuscated or modified to avoid static detection. This technique is a powerful example of abusing non-traditional channels for payload delivery. It underscores the need for deeper inspection of TLS metadata and certificate contents in both network and endpoint monitoring pipelines. PoC: https://lnkd.in/dK4nDMmU #infosec #cybersecurity #redteam #blueteam #malware

Unexpected Ways Your Security Can Be Compromised. Here is a simple Example

𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗮𝗹 𝗖𝘆𝗯𝗲𝗿 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆—𝗟𝗮𝘆𝗲𝗿 𝗯𝘆 𝗟𝗮𝘆𝗲𝗿 OT needs 𝗱𝗲𝗳𝗲𝗻𝘀𝗲-𝗶𝗻-𝗱𝗲𝗽𝘁𝗵, not an IT checklist. From 𝗼𝘂𝘁𝘀𝗶𝗱𝗲 → 𝗶𝗻𝘀𝗶𝗱𝗲: • 𝗣𝗲𝗿𝗶𝗺𝗲𝘁𝗲𝗿: fences, locks, one-way (data diode) gateways • 𝗡𝗲𝘁𝘄𝗼𝗿𝗸: segmentation, OT firewalls, secure remote access • 𝗘𝗻𝗱𝗽𝗼𝗶𝗻𝘁: hardening, allow-listing, secure boot, anomaly/IDS • 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻: code-signing for logic, RBAC, change management • 𝗗𝗮𝘁𝗮: encrypted backups, PKI, integrity checks 𝗧𝘄𝗼 𝗽𝗶𝗹𝗹𝗮𝗿𝘀: 𝗣𝗿𝗲𝘃𝗲𝗻𝘁𝗶𝗼𝗻 (RBAC, patching, reviews) + 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴 & 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗲 (OT-aware SOC, rehearsed IR, controller forensics). 𝗬𝗼𝘂𝗿 𝘁𝗮𝗸𝗲: Which layer is most often missed on real sites? ♻️ Reshare to Help Others Learn. 🔔 Follow and press bell to get notified of my posts. 🤝 Subscribe OT Security Digest Newsletter (6400+) https://lnkd.in/grvyEmZy #OTSecurity #IEC62443 #NIST80082 #DefenseInDepth #IndustrialCybersecurity #CriticalInfrastructure #CyberResilience #ICS #SCADA #OpsSecurity

Security today isn’t about adding more tools — it’s about making them work together. With hybrid work and AI-driven threats, Cisco Security delivers the unified approach organizations need. 👉 https://cs.co/6044ADAb4 #CiscoSecurity #AIsecurity

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As agencies scale IT systems, visibility gaps in endpoints often lead to undetected vulnerabilities. HCL BigFix addresses these challenges by automating patching, supporting OS rollouts, and ensuring compliance at scale—all while meeting key federal mandates like FISMA, NIST 800-53, and CISA. If you're focused on improving endpoint management and security, let’s connect. #ITModernization #EndpointSecurity #CyberResilience #FISMA #NISTCompliance #ZeroTrust #PublicSectorIT #GovTech #BigFix