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your real-world network security check

Internal Network Penetration Testing Services

Secure your organization’s defenses with Astro Information Security. Our experts will probe your network security, giving you the knowledge you need to prevent real-world attacks.

mitigate your security weaknesses proactively
Protect Your Network to Avoid Costly Breaches

According to IBM, the average total cost of a data breach in 2024 was US$4.88M, a 10% increase from 2023. Astro uses a comprehensive range of penetration testing techniques to identify your system’s vulnerabilities and prevent these costly ruptures of your security perimeter. Using the same strategies as in skilled cyberattacks, we create a realistic simulation that exposes every weakness and security gap in your internal network. Our internal penetration testers are skilled at gaining unauthorized and undetected access to your system but, unlike malicious actors, they are on your side.

brought to you by the team that secured:
key facts

Astro at a Glance

100+
earned certifications across GIAC/SANS, ISC2, CompTIA, and more
100+
years of combined IT & cybersecurity experience
110,000+
investigations completed
1,000+
penetration tests completed
More about us
More about us
Confidence in Every Audit

100% money-back guarantee if we find zero vulnerabilities

We take security seriously and stand by the quality of our assessments. If our expert team conducts a full security audit and finds zero vulnerabilities in your system, we’ll issue a 100% money-back refund—no questions asked. This guarantee ensures that you receive real value from our services, whether it’s uncovering critical weaknesses or gaining full confidence in your security posture. With us, you get results or your investment back.

how we help

Securing Your Business Future

If a bad actor can gain access to your network of systems, applications and protocols, it can damage your reputation, create regulatory headaches and cause irreversible harm to your business. Our security testing is the foundation for your organization's network protection in the long term.

Strengthen your security posture

Astro’s testing services inspect every aspect of your network infrastructure’s attack surface. By identifying and ranking vulnerabilities by severity, our detailed reports allow you to prioritize your defenses and build a resilient security environment.

Reduce your cyber risks

Your company’s network is at risk just because it exists. Bad actors constantly test for vulnerabilities. By letting us do it first, we can find the potential attack vectors — whether it's external penetration, critical vulnerabilities, or malicious insiders — and you can secure your systems before anyone can exploit them.

Ensure your regulatory compliance

Good security is an essential, and you will have legal duties to protect your and your customers’ data. The detailed description we provide shows the proactive measures already in place and the additional steps you are taking. It reassures your customers and helps you stay ahead of regulatory requirements.

Put your business strategy first

By using our internal pen testing company, you gain a clear understanding of your digital security. Our report gives you the actionable insight you need to safeguard your sensitive data. When you’ve acted on it, you can focus on your core business, taking decisions that put your goals first without having to worry about the security implications.

services

Our Internal Network Penetration Services

Our testing emulates a risk inside your organization. This might be insider threats or via compromised endpoints. Testing internal security controls, privileges and lateral movement, it illustrates how effective your existing internal security controls are, and where improvements can be made. Our detailed description of the security risks provides the steps you need to take to secure your systems, without getting in the way of your team’s work.

Certifications

We’re Certified Pentesters

Astro's team is certified to carry out pen testing services in line with the industry standards.

our process

How Astro Delivers Internal Penetration Services

Our internal penetration testing works with you step-by-step to identify weaknesses in your network. From our first discussion to the final report, we work with you to give you a tailored service.

Step 1. Initial Discussion and Vulnerability Analysis

Every business is unique. Before we start, we work with you to build a comprehensive inventory of the assets you need to protect, and the nature of your business. We also identify any specific concerns that you have, and establish the parameters of our testing. All this information creates a profile of the risks you face.

Step 2. Identifying the Attack Vectors

After compiling the risk profile, we identify system weaknesses just like cybercriminals would—scanning exposed endpoints, brute-forcing passwords, and conducting phishing exercises. This process uncovers both effective security measures and exploitable physical or human vulnerabilities.

Step 3. Mounting an Attack on Your Network

Once we have identified vulnerabilities, we use industry-leading security tools to mount a systematic attack and identify vulnerabilities in your hardware and software. An attacker with bad intent won’t stop until they have gained full access, and neither will we.

Step 4. Report and Recommendations

We provide a detailed report outlining the methods used, access gained, and network weaknesses. Our consultants offer clear remediation guidance, from staff training and software patches to updated policies, ensuring your network stays secure.

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Ready to Secure Your Network?

If your network isn’t secure, it’s a case of when, not if, someone will take advantage of your weakness. Use internal penetration testing services from Astro to make your security as strong as possible.

why us

Why Our Network Internal Penetration Testing Company

If you want to secure your business, you need to select an internal pen testing company you can trust, and Astro Information Security is exactly this.

Get Started
Get Started

Best-In-Class Experts

We may be a young company, but we were founded by ex-NASA and NSA cybersecurity experts, backed by our team’s collective wisdom of over a century of IT information security experience.

A Partnership Approach

Best practice does not mean a one-size-fits-all approach. We work alongside you to identify threats and keep working to sustain your security as new threats emerge.

A Trusted Penetration Testing Vendor

We’ve completed over 100,000 investigations, and companies we worked with include some of the highest profile targets you can imagine, including Amazon, Meta, and Adobe.

We Understand Your Business

We were founded because we wanted to make sure every business could benefit from nation-state-grade security. Whether you are a non-profit, small business or a global brand, we can help you stop feeling vulnerable and start focusing on your core mission.

Testimonials

What Our Clients Say

“Partnering with Astro has been a game-changer for our cybersecurity posture. Their MXDR service is not only highly effective but backed by a team that exemplifies professionalism and urgency. They are always one step ahead, proactively identifying and addressing threats before they become problems.”
Aaron Nadon
Founder, Aidien IT
“Astro went above and beyond during our penetration testing engagement. Their detailed findings and tailored guidance showed they were truly invested in our success. We’ve never worked with a partner as dedicated to our security.”
Joe Stocker
CEO, Patriot Consulting
"Astro couldn't have been a better partner for our penetration test. They provided more than just a report — delivering clear, actionable recommendations to strengthen our cybersecurity. The team was highly responsive, communicative, and met every deadline. We highly recommend them and look forward to working together again."
Blockit Executive
"I couldn't have made a better choice. From their impressive backgrounds to their top-notch work, it's evident that they are dedicated to ensuring the security of their clients' businesses. If you're a business owner in need of cybersecurity solutions, I highly recommend Astro Information Security. Trust me, you need them on your side."
Cynthia Fleming
CEO, SCC MedQR
“What set Astro apart during our red team engagement was their willingness to go above and beyond. They meticulously scoped key deliverables to align with our business needs and worked through the holiday season to meet our timeline. Their professionalism and commitment to being a true strategic partner was extremely evident.”
CIO, Private Equity Company
related services

Other Penetration Testing Services by Astro:

External Network Penetration Testing
Test for external threats to your internet-facing organizational assets.
Web App Pentesting
Test your web applications and fix security gaps proactively.
Cloud Penetration Testing
Assess your cloud environment’s security posture before it gets exploited.
questions & answers

Frequently asked questions

What is internal penetration testing?

Internal penetration tests inspect your security protection from threats that come from within your organization or network. They simulate an attack by someone who already has some level of network or system access to see if they can gain access to sensitive data or control over systems that they shouldn’t have.

Am I really at risk?

The short answer is ‘yes’. Cybercrime is a lucrative and automated business. The fact you might be small, or that your organization does good work, will be no defense.

What tests will you conduct?

We conduct a comprehensive range of tests. The exact list will depend on your requirements and network, but will frequently include attempts to exploit gateways like any web application you run, a wireless penetration test, vulnerability scanning, brute-force attacks, and using human vectors like phishing.

How does internal pen testing differ from external pen testing?

The main difference is that external penetration testing explores externally facing vulnerabilities. Because internal penetration testing includes potential attacks by insiders, it provides a more in-depth analysis of your internal security controls.

What are the benefits of internal pen testing?

Internal pen testing offers you peace of mind. The risks of a successful cyber attack are enormous, costing you time and money as you address the damage. The loss of trust, reputation and money can set your business back years, or even destroy it. Using pen testing to secure your internal systems is a good investment in your business growth.