---
title: "Security Measures for Customers"
slug: "security-measures-for-customers"
updated: 2024-10-09T06:32:44Z
published: 2024-10-09T06:32:44Z
canonical: "docs.onespan.com/security-measures-for-customers"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Security Measures for Customers

The Personal Certificate Client (PCC) provides a high level of protection against known security threats by leveraging various technologies (see [Authenticating Servers](/v1/docs/authenticating-servers)).

It is nonetheless essential that customers also take certain measures to protect their workstations.

Specifically, we recommend that customers take the following security measures in their environments:

- Use a firewall to block external traffic on the ports used by the PCC (that is, on ports 26666, 31222, 32444, 44555, 47777, 48888).
- Disable any PIN caches available on the middleware of a Smart Card reader or hardware token.
- Instruct users to unplug their Smart Card or hardware token when they are not in use.
- Instruct users to maintain an appropriate level of security on their client machines (e.g., maintaining an up-to-date system, using a firewall).
- Train users to recognize phishing attempts.
- Implement a program that enables users to report phishing attacks.