What Hardenize does

Hardenize is a cloud-based managed security service that automates discovery of an organization's Internet-facing assets and continuously monitors their network and security configurations. The platform combines keyword-based discovery over a proprietary global domain and subdomain database with managed cloud-account integrations (AWS, Azure, GCP) to surface web properties, subdomains, and obfuscated variations that belong to or impersonate the customer. Continuous scanning covers the top 2,000 TCP and UDP ports on a daily basis and evaluates SSL/TLS, PKI, HSTS, CSP, SRI, SPF, DMARC, DNSSEC, DANE, MTA-STS, TLSRPT, and related standards in context rather than as isolated checks. A unified certificate inventory merges network monitoring with real-time Certificate Transparency feed correlation to detect misissuance and alert on expirations across both owned and third-party certificates, with distributed anycast monitoring from 10 global locations available on the Enterprise tier.

The business is monetized as a per-host, per-user annual subscription with two tiers: Business (up to 250 hosts, 25 users) and Enterprise (500+ hosts, 50+ users), with additional hosts billed at $2/month and custom pricing, SLAs, and legal terms negotiated on enterprise deals. The go-to-market blends product-led growth — a self-serve free trial on hardenize.com with public, continuously updated country-TLD dashboards (e.g., .ch, .do, .hu, .lt, .bs, .uz) that serve as marketing assets — with an enterprise field-sales motion that redirects both tiers' demo requests to Red Sift. The product is co-branded as 'Hardenize by Red Sift', with Red Sift handling enterprise sales, legal, and account management, indicating Hardenize operates as a focused product line within the broader Red Sift security portfolio. No founding date, headcount, funding history, or revenue figures are disclosed in the available source material.

Name

Hardenize

Legal name

Hardenize

Website

https://hardenize.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

Hardenize is a cloud-based managed service that automates discovery of Internet-facing assets and continuously monitors their SSL/TLS, DNS, email, and certificate configurations for governments, registries, and enterprises, operated within the Red Sift portfolio.

Ownership category

akta.pro rank

Product category

Network Security Monitoring Software

NAICS

Computer Systems Design and Related Services (5415), Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Configuration & Exposure Hardening (CIS/Benchmarking) (HDADAHAH)

akta.pro secondary industry

Network Security Managed Services (Firewall/IDS/IPS/SASE) (BPAEADAG)

Keywords

• Network security monitoring
• SSL certificate analysis
• DNS configuration auditing
• Cloud security posture management
• Internet asset discovery

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Subscription-based managed service: Hardenize is a managed SaaS service combining automated Internet asset discovery with continuous network and security configuration monitoring, billed on a per-host and per-user basis. Additional hosts beyond plan limits are charged at $2/month. Enterprise plans include custom terms, SLA, and account management.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Hardenize provides a cloud-based managed service that performs automated discovery of an organization's Internet-facing assets and continuously monitors their network and security configuration (SSL/TLS, DNS, email, and web). The platform delivers ongoing assessment and reporting to help organizations maintain a hardened external security posture without deploying on-premises infrastructure.

Product overview

Hardenize is a unified cloud-based managed security service. Its core offering (Hardenize) provides automated Internet asset discovery combined with continuous network and security configuration monitoring across the top 2,000 TCP/UDP ports, certificate inventory and Certificate Transparency monitoring, and a public dashboard feature. The product ships as a single integrated platform with Business and Enterprise pricing tiers. Sub-products include Internet Asset Discovery, Host and Network Monitoring, Certificate Inventory and Expiration Monitoring, Certificate Transparency Monitoring, Cloud Integrations (AWS/Azure/GCP), and Hardenize Dashboards (country-level and global security dashboards).

Differentiator

Problem solved

Functional benefit

Products and services

• Hardenize

Quantifiable outcome

• Daily fresh data on network perimeter security across all monitored hosts
• +3 more outcomes

Segments5 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature6 records

Partnerships

Three partnerships are on record, tiered core.

• Amazon Web Services (AWS)coreTechnology or IntegrationAWS cloud account integration enables Hardenize to automatically discover and monitor Internet assets deployed on AWS infrastructure as part of the cloud integration feature available on Enterprise plans.
• Microsoft AzurecoreTechnology or IntegrationAzure cloud account integration enables Hardenize to automatically discover and monitor Internet assets deployed on Azure infrastructure as part of the cloud integration feature available on Enterprise plans.
• Google Cloud Platform (GCP)coreTechnology or IntegrationGCP cloud account integration enables Hardenize to automatically discover and monitor Internet assets deployed on Google Cloud infrastructure as part of the cloud integration feature available on Enterprise plans.

Scale indicators3 records

Recent moves1 record

Expansion highlights5 records

Direct peers

• Detectify: Direct peer in external attack surface monitoring, focused on continuous discovery of Internet-facing assets and configuration issues — overlapping with Hardenize's continuous perimeter monitoring positioning.
• Censys: Direct peer in Internet-wide asset discovery and continuous attack surface monitoring, with deep certificate and protocol data overlapping Hardenize's core capabilities and a similar SaaS, cloud-delivered model.
• SecurityTrails: Direct peer in DNS, domain, and certificate inventory plus historical DNS data. SecurityTrails targets security teams with surface-discovery and monitoring needs that closely mirror Hardenize's use cases.

Broad incumbents

• Tenable (Tenable.asm / Tenable.io): Broader incumbent in vulnerability and exposure management with an ASM product that overlaps Hardenize's external-facing asset and configuration monitoring, sold as part of a much larger enterprise security platform.
• Microsoft Defender External Attack Surface Management: Broader incumbent offering an EASM capability integrated into the Defender security portfolio; competes with Hardenize for enterprise budget on external asset discovery and continuous perimeter visibility.
• Rapid7 (InsightVM / surface command): Broader incumbent offering vulnerability management and external attack surface capabilities that overlap with Hardenize's continuous monitoring and configuration assessment use cases.
• Qualys VM / SSL Labs: Broader incumbent offering vulnerability management and the widely known SSL Labs server test, which covers many of the same SSL/TLS and certificate configuration checks Hardenize performs but as part of a much wider platform.

Emerging players

• ImmuniWeb: Emerging player offering application security testing and attack surface management with a SaaS delivery model comparable to Hardenize, including continuous website and SSL/TLS security monitoring.
• UpGuard: Emerging player in third-party risk and attack surface management with continuous external monitoring of domains, certificates, and configurations that parallels Hardenize's external-perimeter focus.

Others

• DigiCert CertCentral: Adjacent ecosystem participant: the dominant certificate authority whose CertCentral platform also provides certificate inventory, expiration monitoring, and trust validation — adjacent to Hardenize's certificate monitoring feature rather than a direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hardenize