CISO Tribune

Vendor comparison · 2 companies

Hadrian vs Terra Security

Hadrian is an agentic AI offensive security platform that continuously discovers an organization's external attack surface and tests it for exploitable exposures. Terra Platform™ covers web, API, AI, external network, and internal network pentesting. CISO Tribune files both under Breach simulation and automated pen-testing. 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.

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  • Hadrian
  • Terra Security
Hadrian vs Terra Security: Products, Customers and Funding Compared
HadrianHadrian is an agentic AI offensive security platform that continuously discovers an organization's external attack surface and tests it for exploitable exposures.hadrian.ioTerra SecurityTerra Platform™ covers web, API, AI, external network, and internal network pentesting.terra.security
What it sells
  • Atlas[1][4][5][6][7]Atlas continuously maps a company's external attack surface and validates exposures. Atlas discovers every domain, DNS record, IP, certificate, cloud service and app a company exposes.
  • Nova[1][4][5][9]Nova is an agentic penetration test powered by AI. Once pointed at an application, Nova's AI hacker agents work through it step by step until they can show real impact.
  • Terra Platform™Unifies continuous agentic pentesting across AI systems, network infrastructure, and web apps.
  • Terra Offensive Research Collaboration Hub (TORCH)[3]Lets users work directly with Terra agents and control every step of the process.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
2021[2]Not stated on its pages
Ownership and funding
Privately held[5][6][11][16]Not stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • May 20, 2026Hadrian released OpenHack, a tool for AI-powered source code review.[14]
  • April 2, 2026Hadrian announced that its MCP server is live.[15]
  • May 20, 2026Terra Security announced public preview of continuous exploitation validation for network infrastructure, available to all customers within the Terra Platform.[15]
G2 and Gartner Peer Insights
  • G2: listed, seen November 10, 2026[16]
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Hadrian sells an agentic AI offensive security platform to modern security teams. Hadrian describes mapping the external attack surface of every company in a group, including new acquisitions and legacy infrastructure. Hadrian states that role-based access lets each subsidiary or business unit see and act on its own assets while the group security team keeps the full view. Hadrian says many customers use the platform as their continuous baseline and bring in manual testers for targeted deep dives. Hadrian is delivered from the cloud.Not written yet
Last verified
October 30, 2026November 13, 2026

Where they overlap

  • Hadrian and Terra Security are both filed under Breach simulation and automated pen-testing.

Where they differ, field by field

  • Hadrian's primary category is External attack surface management; Terra Security's is Breach simulation and automated pen-testing.
  • Hadrian is also filed under Exposure prioritisation and CTEM. Terra Security is also filed under AI model and agent security and API security.
  • Hadrian lists Atlas and Nova. Terra Security lists Terra Platform™ and Terra Offensive Research Collaboration Hub (TORCH).
  • Hadrian was founded in 2021.
  • Hadrian is privately held.

What it sells: Hadrian

What Atlas does[1][4][5][6][7]
Atlas discovers assets, technologies and service points, then uses agentic AI to confirm which exposures are actually exploitable. Atlas runs passive scans every hour, and event-driven testing starts automatically when a new asset or change is detected. Atlas pricing is based on the total asset count. Atlas offers two add-ons at additional cost: mergers and acquisitions assessment and infostealers credential leak detection.

What it sells: Terra Security

What Terra Platform™ does
Terra Platform™ runs continuous, agentic pentesting tied to the CI/CD pipeline. Terra Platform™ covers web, API, AI, external network, and internal network pentesting. Terra Platform™ runs as multi-tenant SaaS, as a single-tenant instance in the customer cloud account, or on the customer hardware.
What Terra Offensive Research Collaboration Hub (TORCH) does[3]
The Terra Offensive Research Collaboration Hub (TORCH) lets users work directly with Terra agents. The Terra Offensive Research Collaboration Hub (TORCH) lets users control every step of the process.

Questions about Hadrian and Terra Security

What do Hadrian and Terra Security sell?
Hadrian sells Atlas and Nova. Terra Security sells Terra Platform™ and Terra Offensive Research Collaboration Hub (TORCH).
Are Hadrian and Terra Security in the same category?
They share Breach simulation and automated pen-testing. Hadrian's primary category is External attack surface management and Terra Security's is Breach simulation and automated pen-testing.
When were Hadrian and Terra Security founded?
Hadrian was founded in 2021.
Who owns Hadrian and Terra Security?
Hadrian is privately held.
Who are Hadrian and Terra Security sold to?
From its own pages, Hadrian sells an agentic AI offensive security platform to modern security teams.
What have Hadrian and Terra Security announced recently?
May 20, 2026: Hadrian released OpenHack, a tool for AI-powered source code review. May 20, 2026: Terra Security announced public preview of continuous exploitation validation for network infrastructure, available to all customers within the Terra Platform.

About Hadrian

Hadrian is an agentic AI offensive security platform that continuously discovers an organization's external attack surface and tests it for exploitable exposures. Hadrian's Atlas and Nova products run on one platform, so exposures, pentests and evidence sit in one place. Atlas gives breadth across everything a company exposes, and Nova gives depth in the application that matters. Hadrian runs from the cloud and is ready in minutes.[1][3][4][7]

Atlas continuously maps a company's external attack surface and validates exposures. Atlas discovers assets, technologies and service points, then uses agentic AI to confirm which exposures are actually exploitable. Atlas discovers every domain, DNS record, IP, certificate, cloud service and app a company exposes, then tests all of it the way an attacker would. Atlas maps outward from the organization: subsidiaries and acquisitions, the domains each one registered, then every subdomain, IP, certificate and cloud host under them. Atlas starts from a few apex domains, maps how everything connects, flags what changed and proves which exposures are real. Atlas runs passive scans every hour, and event-driven testing starts automatically when a new asset or change is detected. Atlas matches a new CVE to the assets running the affected version, tests every one of them, and tells the customer which are really exposed.[7]

Hadrian's Orchestrator AI uses machine learning and pattern recognition to scan the internet for exposed assets tied to an organization, including Shadow IT. Hadrian continuously scans the internet to find forgotten subdomains, cloud instances and legacy servers that belong to an organization but are not in its official inventory. Hadrian's platform safely simulates real-world attack techniques to validate if a vulnerability is actually exploitable in the customer's specific environment. Hadrian only flags verified risks that have a confirmed path to compromise. Hadrian's agents safely test what they find and only raise what holds up, with the request, the response and the fix, and they check the fix when a risk is closed.[7][8]

Nova is an agentic penetration test powered by AI that performs the same techniques a skilled human pentester would, including reconnaissance, exploitation and lateral movement. Nova's agents sign in as every role, learn how an app's business logic works and chain small steps into real impact. Nova's testing stays within the scope the customer sets, at the pace the customer chooses, without changing a single record. Nova customers receive access to the Hadrian platform to see results and get a compliance-ready pdf report. Atlas's asset discovery and exposure mapping feeds directly into Nova, so penetration tests are automatically scoped against the real attack surface.[4][9]

Hadrian's hacker agents test the external attack surface continuously, chain what they find into attack paths, and report only the paths they can prove. Hadrian does not replace a scoped red team exercise, and internal networks, social engineering and physical access stay with the customer's human red team.[10]

Hadrian maps the external attack surface of every company in a group, including new acquisitions and legacy infrastructure, and starts testing it as soon as the deal closes. Hadrian uses ownership signals from DNS, certificates and registration records, and a customer's team can confirm or correct attribution in the platform. Role-based access lets each subsidiary or business unit see and act on its own assets, while the group security team keeps the full view. Hadrian connects to multiple cloud environments with a few clicks, providing a centralized view of exposed assets. Hadrian identifies exposed cloud assets and misconfigurations that could enable lateral movement and privilege escalation. Hadrian's ML algorithms prioritize risks based on business relevance, asset attractiveness, discoverability, impact and exploitation ease.[12]

Hadrian allows teams to assign leads, share risk details with third parties, track remediation progress and collaborate in a shared space. Hadrian's risk details include severity, impact, proof of concept and remediation steps.[1][3][9][13]

Hadrian on the record

Sources

Hadrian full record

  1. [1]hadrian.ioHadrian · hadrian.io · undated page, accessed October 30, 2026 · Tier A
  2. [2]CompanyHadrian · hadrian.io · undated page, accessed October 30, 2026 · Tier A
  3. [3]Agentic Penetration Testing | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  4. [4]Offensive Security Platform: Atlas + Nova | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  5. [5]Know your attack surface, pentest it continuously | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  6. [6]Atlas: Continuous Attack Surface Management | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  7. [7]Continuous Attack Surface Management | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  8. [8]Adversarial Exposure Validation (AEV) | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  9. [9]Nova: On-Demand Agentic Pentesting | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  10. [10]Automated Red Teaming for Your Attack Surface | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  11. [11]Acquisition and Subsidiary Attack Surface | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  12. [12]Cloud Exposure Visibility & Control | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  13. [13]Threat Exposure Management (CTEM) | HadrianHadrian · undated page, accessed November 10, 2026 · Tier A
  14. [14]Hadrian releases OpenHack for AI vulnerability discoveryHadrian · published May 20, 2026 · Tier A
  15. [15]Hadrian's MCP server is liveHadrian · published April 2, 2026 · Tier A
  16. [16]Hadrian Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 10, 2026 · Tier C

Terra Security full record

  1. [1]terra.securityTerra Security · terra.security · undated page, accessed November 13, 2026 · Tier A
  2. [2]terra.securityTerra Security · terra.security · published October 28, 2026 · Tier A
  3. [3]Agentic Offensive Security Platform | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  4. [4]Consolidate Offensive Security Tools | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  5. [5]End Alert Fatigue | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  6. [6]Continuous Validation | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  7. [7]Reduce Exposure Dwell Time | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  8. [8]Security & AppSec | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  9. [9]Compliance & GRC | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  10. [10]Prove Compliance Continuously | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  11. [11]Replace Legacy Pentests | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  12. [12]Pricing | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  13. [13]CISOs | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  14. [14]About | Terra SecurityTerra Security · undated page, accessed November 13, 2026 · Tier A
  15. [15]Terra Security Launches Network Penetration Testing as the Only Continuous Agentic Platform for Web Apps, AI Systems, and InfrastructureBusiness Wire · published May 20, 2026 · Tier A

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