Cloud Penetration Testing: Secure Your Cloud Infrastructure

What Is Cloud Penetration Testing?

When most people hear “Cloud Penetration Testing,” they think it’s just traditional pentesting applied to cloud-based infrastructure. But it’s much more than that. A thorough cloud security assessment is more than scanning for common bugs.

In a cloud environment—whether you’re running on AWS, Azure, or GCP—your attack surface is fluid. You’ve got IAM policies, public buckets, exposed APIs, serverless functions, misconfigured roles, third-party integrations, and ephemeral workloads. These aren’t just tech assets—they’re potential entry points.

Cloud Penetration Testing is designed to find and safely exploit vulnerabilities across this entire setup. It includes:

  • Misconfigured access policies and over-permissive IAM roles
  • Leaky storage services like S3 buckets or Azure Blobs
  • Exposed development or staging environments
  • Weak API authentication or cloud-native service risks
  • Cross-account access and identity escalation
  • Forgotten cloud assets still open to the internet

 

Unlike traditional infrastructure testing, we’re not just scanning IPs or running automated tools. We dig into how your cloud infrastructure is actually built and how different cloud application security services interact, because that’s how real attackers find their way in.

Done right, Cloud Penetration Testing not only uncovers hidden risks but helps you build long-term confidence in your cloud security posture.

Digital illustration of cloud data security in a cityscape, representing Cloud Penetration Testing to detect vulnerabilities in cloud infrastructure and services.
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What We Actually Look for in Cloud Penetration Testing

Every cloud setup is different, but one thing stays the same: small misconfigurations can open the door to big problems. Whether you’re using AWS, Azure, or Google Cloud, attackers are looking for the cracks most teams miss.

Here’s what we focus on during a typical Cloud Penetration Testing engagement:

It’s not always the obvious stuff that gets you. Sometimes it’s a user or role with more access than needed—or a forgotten policy that hasn’t been updated in years. We dig into these gaps to see if someone could move laterally or escalate their privileges.

Most modern cloud apps are wired up to external services. That’s not the issue—it’s how securely those integrations are handled. We check if APIs are leaking data, if tokens are being stored correctly, and whether an attacker could jump from one service into another.

It’s surprisingly common—an old staging site, a legacy API, or a temporary public bucket that never got cleaned up. These stray assets often fly under the radar, but attackers notice them fast.

As part of our Cloud Penetration Testing, we hunt down what’s publicly visible across your infrastructure. Then we dig into whether that exposure could actually lead to something serious—like data leaks or unauthorized access.

These aren’t just theoretical risks—they're exactly what cloud vulnerability testing is meant to uncover.

How We Actually Do Cloud Penetration Testing

No two cloud setups are the same. And assuming they’re secure just because they’re on AWS, Azure, or GCP? That’s where things usually start to slip. Our Cloud Penetration Testing process isn’t just about throwing tools at the problem—it’s about understanding how your environment actually works and thinking like someone trying to break it. We align our approach with the OWASP Cloud-Native Application Security Top 10 to ensure coverage of the most critical risks in modern cloud deployments.

We use three approaches depending on how much context you want to give us:

And we won’t leave you with vague suggestions. If something’s exploitable, we’ll show you how it could be used in a real-world scenario. More importantly, we’ll help you understand how to fix it without disrupting your architecture. Because good Cloud Penetration Testing shouldn’t just point out problems—it should actually help you solve them.

How We Actually Do Cloud Penetration Testing

Every cloud environment has its own quirks—what’s normal in AWS might look risky in Azure or GCP. That’s why we ditch one-size-fits-all playbooks and tailor each engagement based on how your infrastructure is actually built.

Pre-Engagement

We start by learning how your setup works. What’s hosted where? Are you preparing for a compliance audit or just doing a routine check? From architecture diagrams to team priorities, this step helps us design a cloud vulnerability testing approach that fits your needs—not just the tools we like.

Information Gathering

Before logging into anything, we run passive recon. Think open ports, forgotten subdomains, unsecured S3 buckets, or lingering endpoints no one’s touched in months. We look at your environment the way an outsider would—to map what’s publicly exposed and where risk might be hiding.

Vulnerability Assessment

Now we dig deeper. We evaluate configurations, IAM roles, permissions, and linked services across your cloud. Cloud vulnerability testing at this stage means uncovering things like excessive privileges, unused access keys, misconfigured storage, or API tokens lying around in logs. These may seem small, but attackers love them.

Penetration Testing

Once we spot a potential weak spot, we test it. Can it be exploited? Could someone move laterally or elevate access? Whether it’s a serverless function or a forgotten dev instance, we play out real-world scenarios to show you what’s actually exploitable.

Reporting

You’ll get a clear breakdown of everything we found—categorized by risk, explained in plain English. No flood of “possible issues”—just prioritized, actionable findings based on how a real attacker would operate in your cloud.

Remediation & Post-Engagement

Cloud fixes can be tricky. We don’t just leave you with a list—we help your engineers understand and

implement the changes. If you’re stuck, we’re there. If something breaks in staging, we help troubleshoot. Simple as that.

Once patches are in place, we recheck the gaps. Many teams use this round to show improvement to leadership, clients, or auditors. We can also issue documentation—like attestation letters and safe hosting certificates—if needed.

Why Choose Cyber Guardians for Cloud Penetration Testing

There are plenty of companies that claim they do cloud security—but few who live and breathe it. At Cyber Guardians, we’ve spent years in the trenches helping engineering teams, DevOps leads, and CISOs make sense of their fast-growing, cloud-first infrastructure. We don’t just look for problems. We help you solve them, in a way that actually sticks.

We Understand How Cloud Really Works

Our team has worked across AWS, Azure, and GCP in real-world environments—not just labs. We’ve seen the messy middle: half-migrated systems, misaligned IAM roles, old S3 buckets no one remembers. We know where risk creeps in and how to spot it before it becomes a real issue. That’s what makes our cloud penetration testing approach different—we meet your systems where they are, not where a checklist says they should be

Less Noise, More Clarity

You don’t need a 90-page PDF that buries the real risks. Our reports are built to tell you: “Here’s what we found, why it matters, and what to fix first.” If a storage bucket is exposed, we’ll show you exactly what’s inside and who could access it—not just list it as a vague vulnerability. That clarity saves your team time and lets you focus on what’s important.

We're In This With You

Some firms run a test, hand you a report, and move on. That’s not us. If your team hits a roadblock fixing something, we’re here. Need to explain a finding to leadership? We’ll help. Want to retest before an investor meeting or compliance check? No problem. Our goal is to make you feel supported—not stuck.

Designed for Fast-Moving Teams

We get it—your cloud is always changing. You’ve got new features rolling out, infrastructure updates, and customers with serious expectations. That’s why we approach cloud vulnerability testing with agility. We adapt, keep pace with your team, and help you build security into your process—not bolt it on as an afterthought. We help teams balance speed and cloud application security—no trade-offs.

Trusted Where It Counts

Our clients include companies where security isn’t optional. Fintechs getting audited, healthcare apps facing HIPAA, SaaS companies raising their next round. They trust us because we go deeper, communicate clearly, and stick around when things get tough.

→ Want to see what that looks like in action? Request a sample report or Book a discovery call—no pressure, no jargon.

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Team Certifications

The VAPT Team Certifications include:

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Tools we use

Prisma Cloud

Nessus

AWS Inspector

Scoutsuit

Cloudenum

AWSCli

Prowler

What You’ll Actually Walk Away With

We get it—most security reports either say too little or way too much. What you need isn’t just pages of technical findings—you need clarity, proof, and direction. That’s exactly what we give you after a Cloud Penetration Testing engagement.

Illustration of a digital lock and cloud storage representing secure deliverables in Web Application Security Testing, including vulnerability reports and safe hosting certificates.

Right after testing, we share a report that speaks your language—no tool spit-outs, no buzzword bingo. We break down exactly what we looked at in your cloud setup, what we uncovered, how serious it is, and what steps to take next. You’ll know which issues matter most and how to fix them—without needing to Google every other line.

Once you’ve addressed the high-priority risks, we can issue a certificate confirming that your cloud environment was tested by an independent team. This helps when someone—like a big client or a procurement reviewer—asks for external validation that you take cloud security seriously.

If you're prepping for SOC 2, ISO 27001, or a round of investor due diligence, a certificate might not be enough. In that case, we provide an attestation letter. It outlines what systems were tested, when, and by whom. It’s clean, factual, and ready to drop into a compliance packet or executive update.

What we hand over isn’t just paperwork—it’s peace of mind. Whether you’re sharing it with your developers, stakeholders, or auditors, the documents you get from us help prove you’ve taken meaningful steps to secure your cloud environment—and show exactly how.

Trusted by 200+ Founders & CTO World Wide

Hear from our satisfied clients. They’ve experienced enhanced cybersecurity posture and peace of mind with our comprehensive services.

JAZEL OOMMEN Co-founder, Munchtime

We enjoyed working with the Cyberguardians team for our security audit. Their responses were always fast and thorough.

Shilpa M Bhatnagar Founder, Haeywa

The Cyber guardians team is very diligent and always available to help. There understanding of cyber security and testing is par excellence.

Jagjeet Singh Manager IT, Lambda Function

Reliable and Prompt Service, Fast execution with clear guidance and support. Awesome experience with CyberGuardians Team.

Resources

Cloud VAPT Resources include:

Screening Report

This is the first report that includes screening data.

Testing Report

This is the final report that includes testing data .

Vulnerability Report

This is the first report that includes Vulnerability data.

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Faq's

Find quick solutions to your most common queries here.

We focus on real-world threats—not just running a scanner. That means testing access controls, exposed APIs, forgotten resources, and how different services in your cloud stack interact. If it’s something an attacker would check, we look at it too. The goal is to uncover issues that could actually be used in an attack, not just theoretical risks.

Only if it’s done carelessly—and we don’t do careless. Before we test anything, we go through your architecture, flag sensitive components, and make sure we’re on the same page about what’s in scope. Many teams prefer to test staging environments, which is totally fine too. Bottom line: we tailor the process to your risk comfort.

Not unless you want a full-scope assessment. We offer black box, gray box, and white box Cloud Penetration Testing options—each with its own depth. You choose how much access we get, and we build the engagement around that. Most teams start with gray box for a good balance between realism and actionable insights.

Absolutely. We design our reporting with compliance in mind. Whether it’s for a cloud security audit, vendor due diligence, or internal risk management, our documentation gives you the third-party evidence most auditors ask for. We also provide an attestation letter or certificate if needed.

If your cloud environment doesn’t change much, once a year is the minimum. But if you’re frequently deploying new features, integrating with third-party tools, or expanding into new regions, testing more regularly makes sense. Think of it as a security check-up for your infrastructure.

We don’t just hand it off and disappear. We walk you through the findings, explain what each issue actually means, and help prioritize fixes. If you patch things up and want us to validate them, we’re happy to retest. The goal is to make sure your cloud is stronger after we leave.