Penetration Testing Services

Advanced ethical hacking services to uncover vulnerabilities, and protect your systems against theft, exploitation, and cybercrime.

Get cyber security assurance with a penetration test from Yell IT

Penetration testing is the permissioned attack on an IT system by an ethical hacker.

Our offensive security experts will execute a range of attacks on an agreed system — using the same techniques an attacker would.

This adversarial testing puts your security through a real-world test, and gives you both insight into weaknesses, as well as actionable recommendations to improve your security.

Outcomes you will achieve:

  • Determine areas of weakness
    uncover flaws and previously-unknown vulnerabilities — and see how they can be exploited
  • Validate your security controls
  • Ensure your systems are safe
  • Receive actionable advice on how to harden your systems against attacks
  • Go to production with confidence and speed
  • Improve confidence in your cyber security
    confirm your system, as designed, is secure

We can test your systems to strengthen security and keep your organisation safe.

Web Apps & eCommerce

Networks & Wireless


VoIP & Communications

Mobile Apps

Servers & Devices

Cloud Environments

SSO, Authentication & Remote Gateways

Process arrow diagram illustrating the key steps in a penetration test from Yell IT: Brief & Approval; Target Reconnaissance; Vulnerability Scanning & Discovery; Vulnerability Exploitation, System Control & Data Exfiltration; Report, Remediate & Debrief.

Our process

  1. Request a quote
  2. Discovery meeting
    to understand requirements, priorities and boundaries
  3. Project initiation
    target reconnaissance and information gathering
  4. Vulnerability scanning
    and discovery of risks within the agreed environment
  5. Manual discovery and verification
    of high risk vulnerabilities, demonstrating how they can be exploited by attackers
  6. Report, re-mediate & Debrief
    following a detailed report, containing advice for fixing identified issues, our team will conduct a free remedial check

How much will a penetration test cost?
Request a quote.

Types of penetration test

A black isometric server with a Yell IT logo, representing black box penetration testing

Black Box Testing

Zero knowledge tests

We approach your systems in the same way as a malicious hacker would — relying solely on publicly-available information. with no insider knowledge of your system architecture, code or network.

This is a quicker test to execute, but can miss vulnerabilities within internal systems.

A white isometric server with a Yell IT logo, representing white box penetration testing

White Box Testing

Hyper-aware tests

You share full detail, including source code, network architecture and other non-publicly-available information. Our security researchers then thoroughly examine these materials to discover vulnerabilities.

This exhaustive examination takes longer in duration and delivers more comprehensive security benefits.

For publicly exposed systems, the attack surface is broader and attacks are more likely. For these systems, we recommend white box testing.

What you will receive in your penetration test report

Yell IT reports are comprehensive and informative. The report we deliver will contain the following key components:

Executive Summary

High-level recommendations and number of risks/threats discovered.

Technical findings

Details of every vulnerability discovered within your system, sorted by criticality.

For each vulnerability, we will share:

  • Which application component it was discovered in
  • The assessed severity (rated in CVSSv3 format)
  • The impact should the vulnerability be exploited
  • Details of how we discovered and exploited it
  • Recommended solutions to repair detected vulnerabilities
  • Inclusions of tools used and detailed logs if required

Yell IT: local, proven & certified expertise

We are a Brisbane-based penetration testing company, offering local, high-touch assistance.

This means you can meet directly with a penetration tester, in person.


We pride ourselves with proactively assisting our customers and their development teams when it comes to finding solutions to unearthed vulnerabilities.

While many penetration testing firms will just say “here’s the issue; go fix it”, we are committed to working closely to develop effective ways to counter and protect against attack.

Broad sector experience

We have carried out penetration testing services across the following sectors for organisations in Australia and beyond:

  • Financial Services
  • Software Development
  • Government & Local Council
  • Energy & Utilities
  • Manufacturing
  • Education
  • Retail
Offensive Security Certified Professional (OWCP) Certification Badge

Offensive Security Certified Professionals

A number of our team hold the OSCP certification issued by Offensive Security.

The OSCP is the mark of a skilled penetration tester. The certification proves ability in finding and exploiting system vulnerabilitites in a plethora of systems.

This certification is awarded after months of intensive learning, culminating in a 24 hour practical exam.

Offensive Security Wireless Professional (OWSP) Certification Badge

Offensive Security Wireless Professionals

We also employ staff who hold the OSWP certification, the Wireless sister-certification to the OSCP.

This certification underlines our capability to detect vulnerabilities in, and professionally execute attacks on Wi-Fi networks.

OPST Certification Badge

OSTMM Professional Security Tester (OPST)

Lastly, members of our team also hold the OPST certification, the professional security tester certification from ISECOM, the Institute for Security and Open Methodologies. This demonstrates excellent capability in best-practise security assessments and penetration testing.

Thinking about commissioning a penetration test? Request a quote.

Frequently asked questions about penetration testing

How much does a penetration test cost?

There is no set price for a penetration test, as there are a number of factors that have a bearing on cost.

The key influences are the number of:

  • forms and inputs
  • dynamic webpages (things that are generated)
  • types of users / roles
  • integrations to other systems

For a free, no-obligation quote, get in touch.

Which methodologies do we follow?

To ensure that each assessment follows a repeatable format, we leverage a range of well-known methodologies for security testing, including:

  • Penetration Testing Execution Standard
    a 7-part standard covering a broad range of areas, combining both technical security expertise and business understanding.
  • OSTMM 3.0
    The Open Source Security Testing Methodology Manual covers a broad range of tactics for security testing.
  • PCI Penetration Testing Guidance
    supplemental guidance assisting in the effective testing of systems requiring compliance to the PCI-DSS standard — the standard for payment card industry data security.
  • NIST SP800-115
    a guide covering the basic technical aspects of conducting information security assessments, as well as understanding the impacts on networks and systems.
  • OWASP Testing Guide
    the Open Web Application Security Project, developed over many years, represents a complete testing framework for web application testing.
    an essential methodology for understanding the adversarial lifecycle, modelling threats, planning defences and validating security controls.

These standards are universally acknowledged as being the fundamental sources for security testing and ensure that Yell IT delivers consistent quality results to all of our customers.

To further complement this approach, our security team constantly monitor the latest cyber security threats to ensure that any new methods of compromise are incorporated into our testing methodology.

What attacks do we frequently protect against?

Here are the attacks we most frequently secure systems against:

  • Injection Attacks
    • Cross-Site Scripting (XSS)
    • Command Injections
    • SQL injections
  • Authentication Attacks
  • Denial of Service
  • Sensitive Data Discovery
  • Attacks on Weak Encryption
  • Network intrusions

How does a penetration test differ from a vulnerability assessment?

Simply put, a vulnerability assessment is a signature-based scan, searching for known issues, ranking by severity.

A penetration test includes everything in a vulnerability assessment, but goes beyond by developing proof of concepts of technical attacks, finding what would happen if an attacker targeted vulnerabilities — as well as discovering application-specific and unknown vulnerabilities.

This table illustrates the key differences:

Vulnerability Assessment Penetration Test
Scan known vulnerabilities
(critical and highs)
Tightly scoped target
Discover unknown vulnerabilities
Bespoke exploits
Pivot after exploit
Demonstrate impact
(data exfiltration etc)
Code available
(white box analysis)

While a vulnerability assessment can often find basic weaknesses, a penetration test is more thorough and delivers greater security benefits.

When should you carry out a penetration test?

The two key times to get a penetration test are:

  1. When you’re deploying a new solution
  2. When you’re upgrading an existing solution

For customer-facing assets, or high-value internal applications, periodic testing should be carried out.

We recommend setting the testing frequency according to risk. Financial or value-related platforms should be tested at least every 6 months, and lower-risk systems should be tested every 2 years.

Request a quote for a penetration test today