Secure In-app calling and phone scam prevention for Financial Service Providers

Arenim Secure Call Center (SCC) module offers best-practice cryptography with all the state-of-the-art security features required for secure, in-app calling and messaging — helping financial service providers prevent the financial losses caused by phone scams.

We help eliminate phone-based data breaches

SCC offers best practice cryptography with all necessary state-of-the-art security features for secure, in-app calling and messaging — preventing financial losses from phone scams.

Vishing (voice phishing)

Block fraudulent voice-based phishing attacks targeting your customers.

Phone impersonation scam

Stop criminals from posing as your institution over the phone.

Caller ID spoofing

Make spoofed caller IDs irrelevant — calls happen inside your authenticated app.

Social engineering scam

Remove the channels social engineers rely on to manipulate your customers.

Follow the Revolut methodology

Arenim SCC enables financial service providers to deliver state-of-the-art secure in-app calling for every customer interaction.

In February 2025 Revolut introduced fully secure in-app calling for all customer-service communication, with a simple promise to its customers: "If it’s not in the app, it’s not us."

"If it’s not in the app, it’s not us." Revolut’s secure-comms commitment to its customers
Secure in-app calling reference visual

Arenim SCC SDK — it’s not just a general VoIP SDK

20+ years of VoIP SDK development with hundreds of implementation projects, including mission-critical mobile apps in regulated sectors such as government and healthcare.

With users in 90 countries, we know what VoIP networking on the move requires — and we cover it natively.

  • Smooth operation on iOS and Android
  • Network switching, network roaming, STUN-ICE-TURN support
  • Heavily NAT-ed networks, low-bandwidth mobile networks, QoS, PLC
  • HD sound quality with Bluetooth (headset and car hands-free)
  • PUSH service implementation upon request

In-app calling and messaging

A lightweight communication SDK to be integrated directly into your customer-facing apps — alongside the SCC gateway and your existing call-center infrastructure.

SCC architecture diagram

What sets SCC apart

Designed by a unique team of communication and security specialists — a VoIP SDK and gateway built for critical in-app communication, including encryption and authentication.

Security without compromise

Usability, user experience, and crystal-clear sound quality are preserved end-to-end.

Independently reviewed

Ongoing third-party verifications keep the security posture honest.

Post-quantum ready

Cryptography prepared for harvest-now-decrypt-later threats from day one.

Fully customizable

Cryptography, branding, and integration paths can all be tailored to your environment.

Designed for critical use

Built for the demanding reliability and security requirements of regulated financial services.

Built by specialists

A team that has shipped secure communications products used in 90+ countries.

Ready for multi-country hybrid Call Center infrastructure rollout

We provide full integration services with your Call Center in place — 100% compatible with the leading Call Center products.

All-around protection against phone impersonation scams

Value for both sides of the conversation — your institution and the customers it serves.

For your company

  • Secure and authenticated customer communications
  • Avoidance of fraud-driven financial losses
  • New online service opportunities on a trusted channel

For your customer

  • Completely secure communication with the bank
  • A single click or tap to start a trusted call
  • Confidence that an inbound contact really is the bank

Secure your Call Center channels with Arenim

Tell us about your call-center setup and customer-protection goals. We will walk you through how SCC integrates and what a phased rollout could look like.