AI-powered application security

Attackers have AI. Give your business a defense.

Cyfendo finds security weaknesses in your applications, checks whether attackers can exploit them, and helps your team fix them.
No dedicated security team required.

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Founded by Bryan Vuong, former engineering leader at Google and Meta. Founder profile →
Illustrative code-security example

Customer records could be exposed

Investigation result Unauthorized access demonstrated
Remediation result Tested fix ready for developer review
Ready for developer review
Code security in use
How we count
Lines of code protected: Active source lines of code currently shielded across monitored customer codebases, measured from each repository’s latest eligible scan snapshot. Excludes third-party dependencies, generated assets, and non-source files under our standard source metering rules.
Repositories protected: Distinct customer codebases currently monitored by Cyfendo. Excludes internal test suites, demo workspaces, and synthetic benchmark suites. Repositories are counted individually and not equated with customer or company counts.
Vulnerabilities found: Cumulative security vulnerabilities discovered across protected repositories and scanned applications, categorized by verified severity levels (Critical, High, Medium, Low).
Calculated Oct 07, 2026, 05:09 UTC from verified system aggregates (cached to optimize page performance).
2.4M
Lines of code protected
264
Repositories protected
4,232
Vulnerabilities found
1,046 critical · 1,852 high
Code-analysis benchmark results

Java

94%recall 96%precision

Python

90%recall 94%precision
Solutions

Choose how you want to secure your applications.

Continuous automated code security for development teams, plus application penetration testing in Beta for select businesses.

Code Security

Ongoing code security

Find vulnerabilities, investigate exploitability, and review proposed fixes as your software changes.

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Security Assessment Beta — Select Businesses Only

Application Penetration Testing

Hands-on security assessments to evaluate exploitability across your applications. Currently in private Beta for select businesses only; separately scoped and available by arrangement (not included in self-serve plans).

Inquire about Beta Assessment
One finding, from discovery to proposed fix

Find. Validate. Fix. Re-test.

Read video transcript & written walkthrough (2:15)

0:00–0:30 — Ingestion & Static Discovery: Connect a repository (GitHub, GitLab, Bitbucket) or upload project files. Cyfendo parses source code into an abstract syntax tree and tracks dataflows from untrusted user inputs to potential execution sinks.

0:30–1:05 — Taint Reachability Analysis: Rather than flagging every potential vulnerability pattern, Cyfendo performs deep cross-file taint analysis to verify that untrusted input actually flows uninterrupted into a vulnerable sink (such as dynamic SQL query construction in app/routes/users.py).

1:05–1:40 — Ephemeral Sandbox Validation: For supported findings, Cyfendo evaluates exploitability in an isolated ephemeral execution environment (dual-oracle sandbox). This proves whether the code path is exploitable under realistic conditions, separating verified risks from theoretical alerts.

1:40–2:00 — Surgical Patch Synthesis: Cyfendo's remediation engine synthesizes a context-aware patch—such as converting raw string concatenation to parameterized SQL queries—and executes the project's existing test suite in the sandbox to verify that application functionality is preserved.

2:00–2:15 — Developer Review & Approval: The validated fix and technical evidence are presented directly to development teams via PR or web dashboard. Developers review, edit, and approve every change before any merge takes place.

See how Cyfendo investigates a vulnerability and prepares a tested fix for review.

01

Understand what needs attention.

See the evidence behind a finding and its potential impact.

02

Give developers a clear next step.

Review actionable findings and proposed fixes where supported.

03

Keep control of changes.

Your developers review and approve what gets merged.

Illustrative Example Finding

Customer input can change the database query.

The lookup builds a query using untrusted input, creating a possible path to unauthorized data access.

01 / 04
Python application example sanitized
18email = request.args.get("email")
19query = f"SELECT id, name FROM users WHERE email = '{email}'"
20user = db.execute(query).fetchone()
Affected fileapp/routes/users.py
FindingCWE-89 · SQL injection
Data pathrequest → query builder → users table
View technical evidence

The f-string inserts email directly into SQL before the database executes it. In this example the lookup returns one row with fetchone().

Stage 01

Find: Locate the path

Static AST parsing and taint tracking trace dataflows from untrusted user inputs to critical application sinks across supported languages.

Stage 02

Validate: Test the claim

Demonstrates reachability and evaluates exploitability in an isolated ephemeral sandbox, separating verified reachable findings from theoretical noise.

Stage 03

Fix: Propose a change

Synthesizes minimal, context-aware remediation patches (such as parameterized database queries) targeting the specific vulnerability root cause.

Stage 04

Re-test: Check the result

Re-executes test suites and security checks in the sandbox to verify fix efficacy before presenting the patch for developer review and merge.

Start with a folder upload or connect a Git repository. See setup options

Code-analysis benchmarks

Code-analysis accuracy you can inspect.

Inspect how many benchmark vulnerabilities Cyfendo found—and how many flagged cases were actual vulnerabilities in standardized code-analysis test suites.

Recall Precision

Recall — How many benchmark vulnerabilities Cyfendo found.

Precision — How many flagged benchmark cases were actual vulnerabilities.

Full results & methodology
Company-reported code-analysis results. Benchmark performance is not a guarantee for every application. Results shown on standardized code suites and versions above; code-analysis benchmarks do not evaluate penetration testing.
Engineering trust

Built for teams without a dedicated security department.

We believe application security should protect what you build without creating busywork or risking your source code. Cyfendo inspects vulnerabilities with empirical verification and leaves your engineering team in complete control of changes.

Learn more about our team
Practical trust questions

Is customer code used to train models?

No. Customer source code is not used to train Cyfendo or third-party foundation models.

What is retained?

Full repositories are processed in ephemeral environments and are not retained as persistent repository mirrors. See the privacy documentation for fuller detail.

Who approves changes?

Your developers review and approve proposed changes. Cyfendo does not decide what gets merged.

Security and privacy details
Code-security plans and allowances

Code-security pricing that fits the way you build

Subscription plans covering automated code scanning, exploitability investigation, and proposed fixes. Penetration testing is in Beta for select businesses only, separately scoped and available by arrangement.

Looking for penetration testing? Application penetration testing is currently in Beta for select businesses only; separately scoped & available by arrangement (not included in self-serve plans).
Inquire about Beta Assessment →
Free
$0/ month
No credit card required

Evaluate Cyfendo on your codebase with zero upfront commitment.

What's included:
  • 10K protected LOC
  • 5 scans / month
  • Limited patch evaluation
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Business
Custom pricing
For teams securing company applications.

Tailored to your codebase, workflow, and support needs.

What's included:
  • Code security with guided setup
  • Application penetration testing (Beta for select businesses; separately scoped & available by arrangement)
  • Executive summary and detailed findings report
  • Cyfendo assessment certificate (documents testing scope & empirical results)
Contact Sales
Enterprise
Custom pricing
For organizations with advanced requirements.

Discuss deployment, governance, and procurement requirements.

Everything in Business, plus:
  • Application penetration testing (Beta for select businesses; separately scoped & available by arrangement)
  • Coordinated testing across teams and applications
  • Consolidated reporting and evidence for compliance reviews
  • Custom deployment and workflow integrations
  • Dedicated customer support with agreed SLAs
Discuss Your Requirements
Core Engine Foundation

The same core security engine across all plans.

Business plans are tailored to your organization’s scope and requirements.

View benchmarks Explore sample findings How we handle your code
Getting started

Frequently asked questions

Find out what Cyfendo supports and how your code is handled.

Visit the full FAQ

Cyfendo's coverage matrix defines our single source of truth across 5 operational dimensions: 1) Basic scanning, 2) Production cross-file taint analysis, 3) Ephemeral sandbox exploit validation, 4) Review-ready patch generation, and 5) Beta / roadmap support. Production support spans 10 core language families: Python, Java, JavaScript/TypeScript, Go, C/C++, Rust, PHP, Ruby, Shell/Bash, and Kotlin / Android. Early-access parsing and basic scanning (Beta / Roadmap) is available for C#, Swift, and Scala.

View full coverage matrix

Start with the evidence

See what Cyfendo finds in your code.

Start free with 10K protected lines of code and 5 scans per month, or connect with our team to discuss your security needs.

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