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Whsipder
zero trust for telecom
Adaptive call threat mitigation

Zero trust
for telecom.

Number blacklists go stale in hours. IP blocking fails against rotating infrastructure. Static detection can't keep up with threats that evolve faster than the rules. Whsipder adds a dynamic detection layer to telecom — every call is scored, verified, and analyzed in real time. No static lists. No fixed rules. Adaptive, intelligent, and always learning.

Request a DemoSee How It Works
Multi
Scoring layers
<50ms
Pre-call decision
GPU
Real-time audio AI
Both
Inbound & outbound
The Problem

Static detection is dead.

The industry's answer to robocalls has been static — block known bad numbers, flag known bad IPs, check attestation headers. But attackers rotate numbers in minutes, spin up new infrastructure daily, and spoof attestation. Number blocking, IP reputation lists, and STIR/SHAKEN alone can't stop threats that evolve faster than the blocklists update. And none of it addresses AI-generated voices, social engineering scripts, or behavioral manipulation. Telecom needs a dynamic detection layer that adapts in real time. Whsipder is that layer.

How It Works

Score. Decide. Act. Before the call connects.

Whsipder is a lightweight SIP media proxy at the network edge. No changes to your softswitch, dial plans, or routing logic. Point your trunks at Whsipder — it inspects, scores, and forwards. One box. One config change. Full protection.

Call Flow
Inbound or Outbound Call
  |
  v
[SIP Trunks] --> [Whsipder Proxy]
                      |
                  Pre-call (<50ms)
                      |
                      +-- Multi-layer scoring engine
                      +-- Infrastructure fingerprint
                      +-- Reputation + threat intel
                      |
                      v
                  [ALLOW | CAPTCHA | BLOCK]
                      |
                  Post-answer (GPU)
                      |
                      +-- Live transcription
                      +-- Deepfake detection
                      +-- Keyword + brand matching
                      +-- Mid-call termination
                      |
                      v
                  [Carrier / PBX]
Pre-call scoring
Before the call connects, multiple detection layers run in parallel — identity verification, behavioral analysis, infrastructure fingerprinting, and threat intelligence. Score computed in under 50ms. Bad calls never ring.
Post-answer AI
After the call connects, GPU-accelerated audio analysis kicks in — real-time transcription, deepfake voice detection, keyword matching, and brand impersonation blocking. Threats caught mid-sentence get terminated instantly.
The Engine

Multi-layer scoring. Every call.

Each call is scored across multiple independent detection layers running in parallel. Weighted scores combine into a single composite score that determines the call decision: allow, challenge, or block. No single layer is a silver bullet — the combination is.

Identity & Authentication
Attestation validation, caller verification, and spoofing detection across multiple identity signals. Every call is verified against known patterns and ownership records.
Behavioral Analysis
Real-time velocity tracking, temporal pattern analysis, and call duration profiling. Automated dialing patterns are caught before the first ring.
Infrastructure Fingerprinting
Proprietary fingerprinting from protocol-level characteristics. Same dialer infrastructure gets the same fingerprint — regardless of number rotation or IP changes.
Threat Intelligence
Reputation learning, external threat feeds, and network-wide intelligence. Bad behavior accumulates across the network — attackers can't outrun their history.
Two Products. Full Coverage.

Outbound + Inbound. Every call, both directions.

Outbound Protection
Stop robocalls from leaving your network. A drop-in SIP media proxy that scores every outbound call across multiple detection layers in under 50ms. Infrastructure fingerprinting, behavioral analysis, voice CAPTCHA, and GPU-accelerated audio AI — including live transcription, keyword detection, and brand impersonation blocking.
Multi-layer scoringInfrastructure fingerprintingVoice CAPTCHALive transcriptionBrand impersonation
Inbound Protection
Protect your agents from malicious vishing. Attackers spoof customer numbers to trick bank agents into pushing wires and phish employees for one-time codes. Whsipder sits on the inbound path with callback verification, deepfake voice detection, and real-time social engineering analysis — killing attacks before your people pick up.
Callback verificationDeepfake detectionWire fraud preventionOTP phishing defenseVoice biometrics
Who It's For

Carriers. Banks. Enterprises.

Telecom Carriers
Stop robocalls from traversing your network. Protect your reputation, reduce traceback complaints, and comply with regulatory requirements. Outbound scoring ensures bad traffic never leaves your infrastructure.
Banks & Financial Services
Protect call center agents from wire fraud, customer impersonation, and voice deepfakes. Callback verification stops spoofed customer numbers. Deepfake detection catches cloned executive voices authorizing fraudulent transactions.
Enterprise
Shield employees from vishing attacks targeting OTP codes, credentials, and internal tool access. Per-extension policies, campaign detection across the organization, and full compliance audit trails.
Platform Capabilities

Production-grade from day one.

Whsipder ships with the infrastructure, security, and observability that production telecom deployments demand. Not a prototype — a platform.

✓
Swagger API documentation at /api/docs
✓
Rate limiting — 100 requests/min per tenant
✓
Full observability stack (Prometheus, Grafana, Alertmanager)
✓
Security headers (HSTS, X-Frame-Options, CSP)
✓
Webhook alerts (BLOCK, SAMPLE, HIGH_SCORE, COMPLIANCE_VIOLATION)
✓
Per-tenant usage metering and quota enforcement
✓
mTLS (mutual TLS) for edge-to-central communication
✓
Comprehensive end-to-end test suite
✓
Self-service tenant onboarding with signup flow
✓
One-command demo deployment via Docker Compose
✓
International NPA support (38 Canadian NPAs + cross-border detection)
✓
ML feedback loop with quarterly model retraining
Competitive Moat

Federated reputation. Network-wide intelligence.

When 3+ tenants independently flag the same infrastructure, it triggers a network-wide penalty. Attackers can't hide behind a single carrier's blind spot — the entire Whsipder network shares threat intelligence in real time.

Cross-tenant robocall intelligence
Federated reputation scoring across the Whsipder network. When multiple tenants flag the same fingerprint, the penalty compounds network-wide. Attackers that hit one carrier are pre-blocked everywhere else — before they even dial.
Continuous ML retraining
Quarterly model retraining on confirmed outcomes — blocked calls, verified robocallers, false positive corrections. The scoring engine gets sharper over time, adapting to new attack patterns as they emerge across the network.
Plans

Start free. Scale without limits.

Every plan includes the full multi-layer scoring engine. No feature gating on detection quality — only volume and support tiers.

Free
Starter
1,000 calls / day
  • Full multi-layer scoring engine
  • Infrastructure fingerprinting
  • Real-time call decisions
  • Dashboard access
  • Community support
Get Started
Pro
Professional
50,000 calls / day
  • Everything in Free
  • GPU-accelerated audio AI
  • Webhook alerts & integrations
  • Usage metering & analytics
  • Priority support
Contact Sales
Enterprise
Unlimited
Unlimited calls
  • Everything in Pro
  • Federated reputation network
  • mTLS & dedicated infrastructure
  • SOC 2 compliance package
  • Dedicated support & SLA
Contact Sales
Enterprise Ready

Built for production. Built for compliance.

Kubernetes-native deployment, full observability, mutual TLS, and SOC 2 readiness. Whsipder meets the infrastructure and compliance bar that enterprise telecom demands.

Kubernetes & Helm Charts
Production-ready Helm charts for all 5 services with horizontal pod autoscaling, GPU node affinity, resource limits, and health probes. Deploy to any Kubernetes cluster — cloud or on-prem.
Full Observability
Prometheus metrics, Grafana dashboards, and Alertmanager rules out of the box. Monitor scoring latency, call volume, block rates, GPU utilization, and model performance. Alert on anomalies before they become incidents.
mTLS Security
Mutual TLS between edge proxies and the central server. Every service authenticates both directions — no trust assumptions, no plaintext communication. Certificate rotation and revocation built in.
SOC 2 Readiness
Comprehensive audit logging, role-based access control matrix, data retention policies, and an incident response runbook. Built to pass SOC 2 Type II examination for enterprise and carrier customers.
One-command demo deployment
# Clone and run the full Whsipder stack locally
git clone https://github.com/dial-labs/whsipder && cd whsipder
docker compose up

# Services started:
#   whsipder-edge     — SIP media proxy + scoring engine
#   fingerprint-server — infrastructure fingerprinting
#   central-server    — reputation, metering, tenant management
#   gpu-server        — audio AI (transcription, deepfake, keywords)
#   dashboard         — admin UI + compliance module
Every call. Verified. Analyzed. Trusted — or blocked.

See Whsipder in action — outbound robocall prevention and inbound vishing protection on live call traffic.

Request a Demo