Cybersecurity · head to head
Infisical vs Microsoft Defender
Infisical
Cybersecurity
Security infrastructure for developers and AI agents
- From
- Free
- Rated
- -
Microsoft Defender
Cybersecurity
Always-on protection for you and your family's data and devices
- From
- $12/month
- Rated
- -
The short version
- Only Infisical has a free tier, so it costs nothing to try first.
- Each has a real cost: Infisical free tier limited to 5 identities, suitable only for small teams or evaluation; Microsoft Defender defender Suite requires existing Microsoft 365 E3 or equivalent base licensing
- Prices and features above were last checked on 29 August 2026.
Where they differ
Only the attributes on which Infisical and Microsoft Defender actually diverge.
| Attribute | Infisical | Microsoft Defender |
|---|---|---|
| Starting price | Free | $12/month |
| Pricing model | Unknown | subscription |
| Free tier | Yes | No |
| Platforms | Web, CLI, Cloud, Self-Hosted | Web |
Identical on both: user rating (Not yet rated), category (Cybersecurity).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Infisical
- Secrets management
- Certificate management
- Privileged access management
- Secret versioning
- Dynamic secrets
- SAML SSO
- Open-source core
- Secrets scanning
Only in Microsoft Defender
Nothing recorded that Infisical does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Infisical
- Managing secrets across Kubernetes clustersnot Microsoft Defender
- Automating certificate lifecycle for internal PKInot Microsoft Defender
- Providing privileged database access with audit trailsnot Microsoft Defender
- Securing credentials for AI agents at runtimenot Microsoft Defender
Microsoft Defender
- Endpoint security and threat protectionnot Infisical
- Identity and access securitynot Infisical
- Email threat protectionnot Infisical
- SaaS application security monitoringnot Infisical
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Infisical
- Free tier limited to 5 identities, suitable only for small teams or evaluation
- Pricing tiers are per-identity, which scales costs with team size
- Certificate management requires Enterprise plan for advanced features like wildcards
- Privileged access tier is separate billing from secrets management
Microsoft Defender
- Defender Suite requires existing Microsoft 365 E3 or equivalent base licensing
- Some Defender products use pay-as-you-go pricing with variable costs
- Prices vary based on Microsoft agreements, requiring sales contact for custom quotes
Pricing, plan by plan
Infisical
Free- FreeFree
- 5 identities
- Unlimited projects
- 3 environments
- Pro - Secrets$20/month
- Per-identity pricing
- Unlimited identities
- SAML SSO
- Pro - Secrets (Annual)$20/year
- Annual discount available
- Unlimited identities
- SAML SSO
- Advanced - Secrets$40/month
- Per-identity pricing
- Dynamic secrets
- Gateways
Microsoft Defender
$12/month- Microsoft Defender Suite$12/month
- Endpoint protection
- Identity threat detection
- Email security
- Microsoft 365 E5 with Defender$60/month
- Includes Defender Suite
- Microsoft Teams included
- Comprehensive security and compliance
- Microsoft Defender Vulnerability Management Add-on$2/month
- Vulnerability scanning and management
- One-month free trial available
- Annual commitment required
Which should you pick?
Choose Infisical if
- You need secrets management.
- You want to start without paying.
- You work on Web, CLI, Cloud, Self-Hosted.
- You also want certificate management.
Choose Microsoft Defender if
Nothing in the data separates Microsoft Defender from Infisical on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Infisical or Microsoft Defender better?
- Neither clearly leads. Infisical starts at Free and Microsoft Defender at $12/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Infisical or Microsoft Defender?
- Infisical has a free tier; the other does not. Paid plans start at Free for Infisical and $12/month for Microsoft Defender.
- Does Infisical or Microsoft Defender run on more platforms?
- Infisical runs on Web, CLI, Cloud, Self-Hosted. Microsoft Defender runs on Web.
- Can I use Infisical for free?
- Yes. Infisical has a free tier, so you can try it without paying. Microsoft Defender starts at $12/month.
- What is Infisical best used for?
- Infisical is most often used for managing secrets across kubernetes clusters, automating certificate lifecycle for internal pki, providing privileged database access with audit trails, securing credentials for ai agents at runtime. Of those, managing secrets across kubernetes clusters and automating certificate lifecycle for internal pki are not what Microsoft Defender is typically brought in for.
- What can Infisical do that Microsoft Defender cannot?
- Infisical covers Secrets management, Certificate management, Privileged access management, Secret versioning.
Answered from the vendors’ own pages
Infisical: How is pricing calculated for Secrets Management?
Pricing is per-identity per month. Free tier includes 5 identities. Pro tier is $20/identity/month, Advanced is $40/identity/month. All pricing in USD.
SourceMicrosoft Defender: How much does Microsoft Defender Suite cost?
Microsoft Defender Suite costs $12/user/month (paid yearly), but requires existing Microsoft 365 E3 or equivalent base licensing. It includes endpoint protection, identity threat detection, email security, and SaaS application monitoring.
SourceInfisical: Can I self-host Infisical?
Yes, Infisical's core is open-source under the MIT license and can be self-hosted. The managed cloud service is also available with additional features.
SourceMicrosoft Defender: What add-ons are available for Microsoft Defender?
Microsoft Defender Vulnerability Management Add-on costs $2/user/month with annual commitment and includes a one-month free trial. Additional pay-as-you-go products include External Attack Surface Management, Cloud Security Posture Management, and Sentinel.
SourceInfisical: What is included in the Enterprise plan?
Enterprise plan includes SCIM, LDAP, approval workflows, external KMS/HSM support, and 99.99% SLA. Pricing is custom and determined by annual commitment.
SourceMicrosoft Defender: Is Defender included in Microsoft 365 E5?
Yes, Microsoft Defender Suite is included in Microsoft 365 E5 at $60/user/month (paid yearly with Teams). Prices may vary based on Microsoft agreements, requiring contact with Sales for customized quotes.
SourceRelated pages
More on Microsoft Defender
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