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OT 安全原則:最終章

 

Principle 5: Boundary Hardening

Your perimeter is your strongest asset against legacy vulnerabilities.

  • Rotate default passwords immediately.
  • Implement phish-resistant MFA.
  • Use context-aware access (Location, OS version, Time).

Principle 6: Impact Limitation

Assume a breach will happen. Design your network to contain it.

  • Segmentation: Isolate functional networks via firewalls.
  • Lateral Movement Defense: Use microsegmentation to block host-to-host pivoting.

Principle 7: Logging & Monitoring

Logs must be actionable, not just stored.

Focus AreaAction
AnomaliesAlert on traffic baselines.
Break-GlassHigh-criticality alerts on emergency account use.
Data FlowsMonitor cross-segment transfers.

Principle 8: Isolation Planning

Develop a “kill switch” strategy that maintains critical functions.

  • Test Site Isolation before an actual emergency occurs.
  • Ensure critical functions operate in “Offline Mode.”

How runZero Helps

Gain total visibility across your OT environment:

  • Discover coverage gaps and bridging devices.
  • Identify edge devices with unauthorized connections.
  • Audit hardware for default configuration risks.

About runZero
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network–without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.

About Version 2 Digital

Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

關鍵安全公告:Fortinet FortiClient EMS

執行摘要: FortiClient EMS API 中的存取控制不當,允許未經身份驗證的攻擊者執行任意程式碼。建議立即針對所有受影響資產套用更新。

 

漏洞概況

  • CVE 編號: CVE-2026-35616
  • CVSS 分數: 9.1 (關鍵級別)
  • 影響: 遠端程式碼執行 (RCE)

 

補救措施表

受影響分支必要更新 / 操作
FortiClientEMS 7.4升級至 7.4.7 或更高版本
FortiClientEMS 7.4.5套用熱修補程式 7.4.5.2111
FortiClientEMS 7.4.6套用熱修補程式 7.4.6.2170

 

資產發現 (runZero)

請使用以下服務查詢指令,識別網路中潛在暴露的端點:

_asset.protocol:http AND protocol:http AND favicon.ico.image.mmh3:=-800551065

About runZero
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network–without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.

About Version 2 Digital

Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

F5 BIG-IP 安全建議公告 – 2026 年 3 月

危急:CVE-2025-53521 已升級為 RCE (CVSS 9.8) – 偵測到活躍攻擊

F5 已確認先前披露的 DoS 漏洞現已演變為 遠端程式碼執行 (RCE) 威脅。所有使用 BIG-IP Access Policy Manager (APM) 的實例必須立即進行修補。

修復建議對照表

受影響版本必備修補版本
17.5.x17.5.1.3 或更高版本
17.1.x17.1.3 或更高版本
16.1.x16.1.6.1 或更高版本
15.1.x15.1.10.8 或更高版本
CISA KEV 狀態: 此漏洞已於 2026 年 3 月 27 日加入已知被利用漏洞目錄。強烈建議聯邦機構與企業立即斷開或修補管理介面。

 

資產識別查詢語句 (runZero)

定位可能受到影響的軟體模組:

vendor:=F5 AND product:=”BIG-IP Access Policy Manager”

定位網路中所有基於 F5 作業系統的設備:

os:=”F5%”

About runZero
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network–without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.

About Version 2 Digital

Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

安全公告:GNU Inetutils telnetd 危急漏洞

GNU Inetutils telnetd 伺服器發現多項危急漏洞,影響大多數現代 Linux 部署。這些缺陷允許攻擊者在顯示登入提示前,即可繞過身分驗證並執行遠端程式碼 (RCE)。

狀態:目前尚無修補程式。 強烈建議立即在所有受影響的主機上停用 Telnet 服務。

漏洞摘要

漏洞類型編號CVSS 分數受影響版本
SLC 緩衝區溢位尚未指派危急 (Critical)2.7 及更早版本
身分驗證繞過 ($USER 變數)CVE-2026-240619.81.9.3 及更高版本

使用 runZero 進行識別

請在您的資產清單 (Asset Inventory) 中使用以下查詢語句來尋找可能受影響的 Linux 系統:

_asset.protocol:=telnet AND protocol:=telnet AND os:Linux AND banner:=”%login:” AND NOT banner:busybox

建議採取行動

  • 在整個網路中停用 telnetd 服務。
  • 確保實施嚴格的網路存取控制(防火牆)。
  • 將遠端管理工具更換為具備加密功能的 SSH.

About runZero
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network–without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.

About Version 2 Digital

Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

HPE Aruba Networking Security Advisory

Security Advisory: HPE Aruba Networking AOS-CX

HPE has disclosed several vulnerabilities in the AOS-CX network operating system. Successful exploitation could allow adversaries to bypass authentication or execute arbitrary commands on the underlying OS.

CRITICAL NOTICE: CVE-2026-23813 allows unauthenticated remote adversaries to reset the administrator password. Immediate patching is required.

Vulnerability Summary

CVE IDTypeCVSS
CVE-2026-23813Authentication Bypass9.8
CVE-2026-23814CLI Command Injection8.8
CVE-2026-23815Binary Command Injection7.2
CVE-2026-23816OS Command Injection7.2
CVE-2026-23817Open Redirect6.5

Remediation Steps

Update to the following versions or later to resolve these issues:

  • AOS-CX 10.10.xxxx: Upgrade to 10.10.1180
  • AOS-CX 10.13.xxxx: Upgrade to 10.13.1161
  • AOS-CX 10.16.xxxx: Upgrade to 10.16.1030
  • AOS-CX 10.17.xxxx: Upgrade to 10.17.1001

Asset Identification (runZero)

To locate potentially vulnerable systems in your inventory, use the following query:

hw:=”HPE Aruba CX%” AND protocol:http

About runZero
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network–without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.

About Version 2 Digital

Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

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