API Security · Browser-side encryption

Protection that beginsin the browser.

AES-256 from the first keystroke to the backend API. The only API security platform where encryption begins on the user's device — not at the server's edge.

VaultBridge
AES-256 end-to-end
WCAG 2.1 AA
DISA STIG aligned
OWASP Top 10 native
HTTP/3 + QUIC
The API security crisis

APIs are exposed by design. VaultBridge changes the design.

Browser developer tools inspect every call. Tokens leak. Requests are replayed. Geographies that should never see your API can talk to it directly. Traditional gateways protect the network edge — by then, the sensitive payload is already in plain sight.

99%
of organizations experienced API security issues in the last year
$10.22M
record average cost of a data breach in the U.S. in 2025
+38%
annual increase in global cyberattacks against organizations
53%
of organizations have suffered bot attacks targeting their APIs
Sources · Salt Security Q1 2025 · IBM Cost of Data Breach 2025 · Check Point Research 2025
The product

The only proxy that encrypts before the request leaves the browser.

VaultBridge is a runtime security layer between your web/mobile applications and your backend APIs. It stops attacks, prevents data leaks, and protects sensitive information — including from attacks that originate inside the user's own browser.

  • 01

    Browser-side first

    VaultBridge ships an SDK that establishes an AES-256 channel inside the user's browser. By the time a request hits the wire, the payload is already opaque — invisible in DevTools.

  • 02

    Native end-to-end, not bolted on

    Ephemeral session keys, mutual authentication, and continuous integrity verification sit at the core of the protocol. No retro-fitted layer over an existing gateway.

  • 03

    Built for regulated industries

    Designed in alignment with the DISA Application Security & Development STIG and Web Server SRG. Aligned with WCAG 2.1 AA. Ready for SIEM ingestion (Splunk, QRadar, Elastic) out of the box.

  • 04

    Zero-Trust southbound

    Every backend connection is validated through strict IP allow-listing and certificate-based mTLS. The attack surface drops to the few endpoints you explicitly trust.

Architecture

Three steps. One encrypted path.

The SDK runs in the user's browser. It establishes ephemeral keys with VaultBridge. Every subsequent request — body, headers, streaming events — is AES-256 encrypted before it crosses the network. VaultBridge decrypts at the perimeter, applies policy, and forwards over mTLS to your backend.

01 · BROWSERUser deviceVaultBridge SDKAES-256 origin02 · VAULTBRIDGEEdge perimeterDecrypt & verifySchema validationGeo & rate limitsSIEM streaming03 · BACKENDYour APIsmTLS / IP allowlistZero direct exposureAES-256mTLS
Watch

See the platform in motion.

Short, narrated walkthroughs of the architecture, the threat model, and the integration story. Built for technical buyers who want substance — no marketing reels, no soundtracks.

01 / 03

The browser-side security layer

A 90-second walkthrough of how VaultBridge establishes an AES-256 channel inside the user's browser — and why that closes the gap left open by every WAF and API gateway on the market.

HD · 1080p1:24
Capabilities

One platform. Every layer of the API attack surface.

VaultBridge consolidates the controls that today are scattered across WAFs, API gateways, bot-management products, and DLP layers — and adds the one thing none of them can offer: encryption that begins inside the browser.

01

End-to-end encryption from the browser

AES-256 channel established before TLS. Ephemeral session keys, mutual authentication, encrypted bodies, headers and streaming events.

02

Secure Streaming (SSE)

Each Server-Sent Event individually AES-256 encrypted. Ideal for AI/LLM responses, live dashboards, push notifications, real-time financial data.

03

Secure Links

Turn any API call into a short, encrypted URL safe for email, SMS, chat, or QR. Configurable TTL, max invocations, instant revocation.

04

Data Links

Publish encrypted data behind self-contained URLs. Split-knowledge AES-256: a database breach alone cannot decrypt the payload.

05

Smart Whitelisting

Granular, policy-driven control over which APIs, methods, and payloads are allowed. Only trusted, compliant traffic reaches your backend.

06

HTTP/3 with QUIC

Zero-discovery: QUIC connection from the very first request. Connection migration survives WiFi-to-5G transitions on mobile networks.

07

Replay Protection

Unique UUID per request and a distributed Hazelcast cache reject duplicates across instances — even on horizontally scaled deployments.

08

Geo-Fencing

Country, region, and custom-coordinate based access control with real-time IP geolocation. Block traffic from high-risk geographies at the perimeter.

09

Advanced Rate Limiting

Multi-dimensional defense: per-identity (extracted from encrypted payload), per-IP, and global limits — without backend changes.

10

Headless Browser Detection

Catches Puppeteer, Playwright, Selenium, PhantomJS at SDK init via 20+ client-side signals. Strict / monitor / disabled modes.

11

Behavioral Verification

Proof of Life: validates human presence at form submission via mouse/touch interaction MinHash fingerprints and Jaccard similarity replay detection.

12

Transparent SIEM integration

Detailed security events, access logs, and audit trails exported in JSON for direct ingestion into Splunk, QRadar, Elastic — no custom connectors.

The category gap

Traditional gateways protect the network. VaultBridge protects the path.

WAFs, API gateways, and CDNs do useful work — but every one of them leaves the payload exposed in browser DevTools. VaultBridge closes that gap without replacing what already works.

Capability
VaultBridge
Legacy gateways & WAFs
E2E encryption from browser
AES-256 before TLS
TLS only — payload visible in DevTools
Replay protection
Distributed cache, UUID per request
Limited or none
SSE streaming protection
Each event individually encrypted
Channel-level TLS only
Geo-blocking
Country, region, custom coordinates
Country only
Headless browser detection
20+ signals at SDK init
Bot scoring (post-request)
Zero-code policy
100% declarative
Lambda / Workers / XML
Compliance & trust

Designed in alignment with DoD-grade standards.

The platform is engineered against the DISA Application Security & Development STIG and the Web Server Security Requirements Guide (SRG). Native OWASP Top 10 mitigations. WCAG 2.1 AA. Ready to integrate with any SIEM stack on day one.

STD · 01
DISA STIG aligned

Application Security & Development STIG and Web Server SRG. Accelerates DoD-grade accreditation.

STD · 02
OWASP Top 10 native

Access control, validation, encryption, integrity verification — embedded at the entry point.

STD · 03
WCAG 2.1 AA

4.5:1 body contrast and 3:1 UI contrast across all branded and product surfaces.

STD · 04
Zero-Trust southbound

Strict IP allow-listing combined with certificate-based mTLS for every backend connection.

Audience

Built for the team that reads the architecture before the brochure.

VaultBridge is engineered for technically sophisticated security teams that evaluate platforms on substance, not aesthetic novelty. Three adjectives summarize the design intent.

  • 01

    Secure

    Closer to a Swiss bank vault than to a tech startup. No padlocks. No shields. No marketing theatre.

  • 02

    Structural

    Engineered, not styled. The platform's posture comes from its architecture, not from its surface.

  • 03

    Considered

    Quietly confident. Substantive. Modern, but not trendy. Designed to age well across a decade of audits.

The buyer

Built for the CISO buyer.

Banking, fintech, healthcare, and government teams evaluate security stacks on credibility, architectural seriousness, and proof — not aesthetic novelty. VaultBridge is positioned for that audience: SIEM-ready, accreditation-aligned, and deployable on local infrastructure where regulation requires it.

AudienceCISOs · AppSec architects · API platform owners
SectorsBanking · Fintech · Healthcare · Government
Data residencyRegional deployment available
DeploymentSaaS · On-premises · Hybrid