CISO Tribune

Vendor comparison · 2 companies

Tenable vs Waterfall Security Solutions

Tenable sells Tenable One, a platform that unifies security visibility, insight and action across an attack surface. Waterfall Security Solutions offers software-enabled hardware platforms. CISO Tribune files both under OT and ICS security. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

Change the companies

Up to four companies side by side.

  • Tenable
  • Waterfall Security Solutions
Tenable vs Waterfall Security Solutions: Products, Customers and Funding Compared
TenableTenable sells Tenable One, a platform that unifies security visibility, insight and action across an attack surface.tenable.comWaterfall Security SolutionsWaterfall Security Solutions offers software-enabled hardware platforms.waterfall-security.com
What it sells
  • Tenable One[2][3][4][8]A platform that unifies security visibility, insight and action across an attack surface.
  • Unidirectional Gateways[1][6][7][8][9][11][12][13]Hardware that enforces one-way data flow.
  • HERA[3][5]Hardware-Enforced Remote Access for OT networks.
  • WF-500 DIN Rail[10]A Unidirectional Security Gateway in a compact design.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
20022007[2]
Ownership and funding
Not stated on its pagesNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pagesNot stated on its pages
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Tenable describes converged OT and IT environments among the environments it covers. Tenable's pages cover multi-cloud and hybrid cloud environments, and Active Directory and Entra ID identity environments. Tenable describes highly dynamic cloud or remote workforce assets among those its asset discovery covers.Not written yet
Last verified
November 5, 2026November 9, 2026

Where they overlap

  • Tenable and Waterfall Security Solutions are both filed under OT and ICS security.

Where they differ, field by field

  • Tenable's primary category is Vulnerability management; Waterfall Security Solutions's is Unidirectional gateways and secure transfer.
  • Tenable is also filed under External attack surface management and Cloud-native application protection (CNAPP).
  • Tenable lists Tenable One. Waterfall Security Solutions lists Unidirectional Gateways, HERA and WF-500 DIN Rail.
  • Tenable was founded in 2002. Waterfall Security Solutions was founded in 2007.

What it sells: Tenable

What Tenable One does[2][3][4][8]
Tenable One maps the attack surface across infrastructure, cloud, identity, OT, third-party applications and AI. Tenable Hexa AI is the agentic layer of Tenable One.

What it sells: Waterfall Security Solutions

What Unidirectional Gateways does[1][6][7][8][9][11][12][13]
A Unidirectional Gateway enforces one-way data flow in hardware, with no inbound attack path through it. Unidirectional Gateways replicate historians, databases, OPC servers and more to business networks.
What HERA does[3][5]
HERA, Hardware-Enforced Remote Access, provides the functionality of remote access. Hardware Enforced Remote Access enables remote management, updates, and troubleshooting for OT networks.

Questions about Tenable and Waterfall Security Solutions

What do Tenable and Waterfall Security Solutions sell?
Tenable sells Tenable One. Waterfall Security Solutions sells Unidirectional Gateways, HERA and WF-500 DIN Rail.
Are Tenable and Waterfall Security Solutions in the same category?
They share OT and ICS security. Tenable's primary category is Vulnerability management and Waterfall Security Solutions's is Unidirectional gateways and secure transfer.
When were Tenable and Waterfall Security Solutions founded?
Tenable was founded in 2002. Waterfall Security Solutions was founded in 2007.
Who are Tenable and Waterfall Security Solutions sold to?
Tenable describes converged OT and IT environments among the environments it covers.

About Tenable

Tenable sells Tenable One, a platform that unifies security visibility, insight and action across an attack surface. Tenable One uses native signals, exposure intelligence and third-party data to map the attack surface across infrastructure, cloud, identity, OT, third-party applications and AI. Tenable One connects potential risk with pathways for exploitation and impact through continuously enriched exposure intelligence. Tenable One unifies disparate security data to show how a weakness in one domain can escalate into a breach in another. Tenable Hexa AI is the agentic layer of Tenable One.[2][3]

Tenable One Vulnerability Management is built on Tenable Nessus technology and is managed in the cloud. Vulnerability Priority Rating (VPR) is powered by generative AI, enriched threat intelligence and context-aware scoring. Tenable unifies all vulnerability management data with continuous asset scanning and automated risk prioritization capabilities. Tenable supports bi-directional ticketing to mobilize remediation and benchmarking of progress. Tenable One discovers and continuously inventories assets across IT, cloud, OT, web applications and the external attack surface. Tenable One measures, compares and tracks exposure using risk scores and benchmarks. Exposure alerts from Tenable One can be integrated with manual or automated ticketing workflows for IT, cloud and security teams.[1][3][4][5]

Tenable cloud security addresses misconfigurations, risky entitlements and vulnerabilities across multi-cloud and hybrid environments. Tenable combines cloud workload protection (CWPP) with cloud security posture management (CSPM and KSPM).[2][4][5]

Tenable identity security uncovers weaknesses and overprivileged access in Active Directory and Entra ID. Tenable offers a unified security solution for converged OT/IT environments. Tenable continuously discovers AI tools, agents and workloads across an attack surface. Tenable discovers shadow AI, AI workloads, services and externally exposed AI components. Tenable identifies vulnerabilities and misconfigurations in AI workloads and supporting cloud infrastructure. Tenable provides visibility into employee use of generative AI and autonomous agents. Tenable detects and responds to AI-specific threats and misuse, including prompt injection and jailbreaks.[2][4][5][6]

Tenable Security Center identifies and prioritizes vulnerabilities based on risk to a business and is managed on premises. Tenable Security Center provides an automated approach to implementing and maintaining many technical controls included in an Information Security Management System based on ISO/IEC 27001/27002 standards. Tenable Security Center collects data from multiple sensors to analyse vulnerability, threat, network traffic and event information. Tenable Security Center supports most technical controls prescribed in the NIST CSF, ISO/IEC 27002 and CIS CSC frameworks. Tenable Security Center provides active and passive monitoring of technical control status. Tenable Security Center audits configurations of many third-party products and analyses events generated by them to identify control weaknesses.[5][7]

Tenable One connectors combine data from third-party security tools. Tenable One connectors can ingest data from additional tools, internal systems, spreadsheets or files. Tenable offers several global hosting locations, depending on the product used. Tenable customers may request a specific geographic region prior to deployment. Tenable keeps customer data within the designated region, including backups. Tenable Identity Exposure uses additional Azure data center locations. Tenable supports regional failover and disaster recovery for its cloud-based services. Tenable targets an RPO and RTO of 48 hours for all cloud-based solutions.[1][2][3][5][8][9]

Tenable on the record

Sources

Tenable full record

  1. [1]About usTenable · tenable.com · undated page, accessed November 5, 2026 · Tier A
  2. [2]Vulnerability and exposure management | Cloud and AI security | Tenable®Tenable · undated page, accessed November 10, 2026 · Tier A
  3. [3]Tenable One Vulnerability Management | Tenable®Tenable · undated page, accessed November 10, 2026 · Tier A
  4. [4]Tenable One Pricing | Tenable®Tenable · undated page, accessed November 10, 2026 · Tier A
  5. [5]Tenable One exposure management platform and products | Tenable®Tenable · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI security solutions | Tenable®Tenable · undated page, accessed November 10, 2026 · Tier A
  7. [7]ISO/IEC 27001/27002 | Tenable®Tenable · undated page, accessed November 10, 2026 · Tier A
  8. [8]Tenable One connectors | Tenable®Tenable · undated page, accessed November 10, 2026 · Tier A
  9. [9]Tenable Trust PortalTenable · undated page, accessed November 10, 2026 · Tier A
  10. [10]Tenable Vulnerability Management Reviews 2026G2 · undated page, accessed November 10, 2026 · Tier C
  11. [11]Tenable Reviews, Ratings & Features 2026Gartner Peer Insights · undated page, accessed November 10, 2026 · Tier C

Waterfall Security Solutions full record

  1. [1]waterfall-security.comWaterfall Security Solutions · waterfall-security.com · published July 6, 2026 · Tier A
  2. [2]CompanyWaterfall Security Solutions · waterfall-security.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Hardware-enforced OT Security | Waterfall Security SolutionsWaterfall Security Solutions · undated page, accessed October 30, 2026 · Tier A
  4. [4]OT Visibility Without the Trade-Off: Waterfall & Siemens Energy | Waterfall Security SolutionsWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  5. [5]Cyber Security in the Government Sector | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  6. [6]Cyber Security for Rail Industry | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  7. [7]Cyber Security for Metals & Mining | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  8. [8]Cyber Security in the Oil and Gas Industry | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  9. [9]Cyber Security for Manufacturing | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  10. [10]WF 500 DIN RAIL | Waterfall Security SolutionsWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  11. [11]Cyber Security for Electric Power | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  12. [12]Cyber Security for Water Treatment | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A
  13. [13]Facilities Cyber Security Solutions | Waterfall SecurityWaterfall Security Solutions · undated page, accessed November 10, 2026 · Tier A

Spot a factual error? Request a correction.