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Hardenize
What Hardenize is
Hardenize is a cloud-hosted managed service that discovers Internet-facing assets and continuously monitors their network and security configuration. It searches for customer websites and domains, can add newly found properties to an inventory, and offers managed connections to AWS, Azure, GCP and other cloud accounts. Domains, hostnames and IP addresses are checked daily, including scans of the top 2,000 TCP and UDP ports. Hardenize tracks certificate expiry, including certificates used by third-party services, and watches worldwide Certificate Transparency activity for misissued certificates and policy violations. Its security checks cover SSL and TLS protocols, cipher suites, named groups and other cryptographic primitives, with simulated connections from popular clients. Application checks include HSTS, CSP, SRI, secure cookies and mixed-content prevention. Email checks cover STARTTLS, TLS and PKI settings, SPF, DMARC, MTA-STS and TLSRPT. DNS and IP monitoring spans IPv4, IPv6, DNSSEC, service addresses and DANE validation. Two-factor authentication, single sign-on, groups and teams are listed access options.
Who it suits
Hardenize suits organizations that need continuous oversight of Internet assets, certificates, DNS, email security and application configuration. It is available through web and API platforms and requires nothing to install or manage.
What it does well
- Automatically discovers and inventories Internet properties
- Daily monitoring scans top 2,000 TCP and UDP ports
- Tracks certificate expiry and Certificate Transparency
- Checks application, email, DNS and cryptographic settings
- Offers two-factor authentication and single sign-on
What to know first
- Pricing is available only on request
- No free plan
- Unmetered features use a fair-use basis
- Enterprise additional hosts cost $2/month or require a quote
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Business | Monthly price, billed annually; request a demo · 250 monitored hosts · 25 users · no charge for inactive hosts · additional hosts $2/month or ask for a quote | On request |
| Enterprise | Monthly price, billed annually; request a demo · 500+ monitored hosts · 50+ users · no charge for inactive hosts · additional hosts $2/month or ask for a quote | On request |
As hardenize.com lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
Hardenize combines asset discovery with broad, recurring checks across network, certificate, application, email and DNS security. Its cloud delivery reduces installation work, while plan limits and request-based pricing require discussion with the vendor.
Facts from Hardenize's own pages
- Access and teams
- The pricing page lists two-factor authentication, single sign-on, groups, and teams. · hardenize.com, 11 Oct 2026
- Application security
- Listed checks include HSTS, CSP, SRI, secure cookies, and mixed content prevention. · hardenize.com, 11 Oct 2026
- Certificates
- It monitors certificate expiration, including certificates used by third-party services, and alerts customers to potential expiration and configuration problems. · hardenize.com, 11 Oct 2026
- Certificate Transparency
- Hardenize monitors certificates issued worldwide in real time and highlights misissued certificates and policy violations. · hardenize.com, 11 Oct 2026
- Cloud hosted
- Hardenize says it runs as a cloud service and requires nothing to install or manage. · hardenize.com, 11 Oct 2026
- Cloud integrations
- The product page says managed integrations can connect Hardenize accounts to AWS, Azure, GCP, and other cloud accounts. · hardenize.com, 11 Oct 2026
- Discovery
- It searches for web sites and domains belonging to a customer and can automatically add newly found properties to the inventory. · hardenize.com, 11 Oct 2026
- DNS and IP
- It monitors DNS and DNSSEC across IPv4 and IPv6, finds service IP addresses, and supports DANE validation. · hardenize.com, 11 Oct 2026
- Email security
- Hardenize checks STARTTLS, TLS and PKI configuration, SPF, DMARC, MTA-STS, and TLSRPT. · hardenize.com, 11 Oct 2026
- Founded
- 2016 · hardenize.com, 28 Sept 2026
- Headquarters
- London, United Kingdom · hardenize.com, 28 Sept 2026
- Network monitoring
- Hardenize says it monitors domains, hostnames, and IP addresses daily and scans the top 2,000 TCP and UDP ports. · hardenize.com, 11 Oct 2026
- Security checks
- The product checks SSL and TLS protocols, cipher suites, named groups, and other cryptographic primitives, and simulates connections from popular clients. · hardenize.com, 11 Oct 2026
- Service
- Hardenize is a managed service that combines automated discovery of Internet assets with continuous network and security configuration monitoring. · hardenize.com, 11 Oct 2026
- Support
- The Enterprise plan lists priority support and custom support, SLA, legal terms, and account management. · hardenize.com, 11 Oct 2026
- Usage limits
- The pricing page states that unmetered features are provided on a fair-use basis. · hardenize.com, 11 Oct 2026
Where Hardenize stands on Freedom251
- DNS Monitoring Software#32 of 39