GCP Penetration Testing

Misconfigured GCP projects expose production data, service accounts, and internal services through overly permissive IAM, public Cloud Storage buckets, open VPC firewalls, and unauthenticated Cloud Functions or APIs. Breaches follow simple mistakes: broad roles at the folder level, default networks, weak logging, and unsecured service identities that enable silent lateral movement across workloads.

Engage Cyphere’s GCP penetration testing to stress test IAM, VPCs, GKE, Cloud Storage, Cloud SQL, Cloud Functions, and Cloud Run against attacker techniques, not just configuration checklists. Cyphere maps privilege escalation paths, weaponises exposed services, validates data exposure, and delivers prioritised remediation aligned to Google’s best practices, tightening your Google Cloud security posture before attackers exploit the same paths.

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Importance of Google cloud penetration testing (CREST Approved)

As Google Cloud is a shared environment, it is logical that security threats will appear in the list of your concerns. Threat actors test your GCP services to identify security vulnerabilities. The only way to mitigate risks is first to know which risks are worth the treatment through Google penetration testing.

Cloud penetration testing is different from traditional penetration testing. This is because everything is Internet facing and it is important to prevent sensitive data losses, stop threat actors from compromising your data or servers. Further, identify and address issues that compromise the integrity of your data.

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GCP pentesting is important because it enables you to detect any security weaknesses or vulnerabilities in your Google cloud platform infrastructure. Google cloud platform penetration testing is also equally important for compliance within industry regulations like HIPAA, SOX, FDA, GLBA, GDPR, PCI DSS.

Google Cloud Penetration Testing helps businesses comply with data protection regulations such as the General Data Protection Regulation (GDPR). It gives customers the ability to demonstrate that their data is protected and only accessible to those who should have it.

Common attack vectors behind Google cloud attacks

Hackers perform various attacks that can be classified into different categories such as

  1. Phishing
  2. Social engineering attacks
  3. Malware attacks
  4. Man-in-the-Middle (MITM) attacks
  5. Brute force/dictionary attacks.

These are more like entry points leading way into the endpoints and further exploitation through lateral movements, credential theft, password spray attacks, etc is performed to reach their objectives. This could include stealing data, stealing hashes/passwords or modifying code to inject backdoors. Malware or viruses are injected into your system to exfiltrate data. Once an attacker has access to your system he can use techniques such as command injection, directory traversal and code injection to interact with backend data.

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Key benefits of Google cloud penetration testing

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Why choose Cyphere to provide GCP penetration testing services?

Google cloud platform pentesting techniques

We perform GCP penetration testing using various techniques to identify google cloud security issues with your Google cloud infrastructure.

  1. Prepare your Google Cloud Platform (GCP) pentesting plan
  2. Identify all the components that can be potentially attacked on GCP
  3. Carry out Google penetration testing of all the identified components
  4. GCP Pentest the cloud environment with public tools
  5. Report on all findings and recommended actions to fix vulnerabilities.
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Most frequently asked questions on GCP pentesting

Our Google cloud penetration testing services helps you strengthen your Google cloud environments by identifying security loopholes and fixing them. By using the information provided by us during penetration testing, companies can take necessary steps to improve their security procedures to prevent future breaches or remove hackers from their systems.

You do not need to seek prior permission from Google to carry out google cloud penetration testing on virtual machines and services. However, based on the scope of the job you may need to inform your security team or other users that you are about to run security tests on the G-Suite applications or Google storage buckets they use within your organisation.

Google cloud pentesting is a method for identifying vulnerabilities in Google cloud computing systems and networks. Penetration testers use the same tools, techniques and experience as attackers/hackers to identify security issues.

If you are using google cloud pentesting for any kind of business purpose then you should go for penetration testing. It is important to test your GCP infrastructure for vulnerabilities before you publish it for the world to use. A secure platform will ensure that all the data being stored by you remains safe with minimal chances of getting hacked.

Yes, there is a major difference between automated scanning and penetration testing. An automated scan focuses on finding vulnerabilities in the system without verifying they are true and in the context of the environment. GCP Pentest focus is deeper to identify the issues, exploit them safely, and a step further to see how far a threat actor can go in such a situation. It helps to understand the threats close to a real-life situation before addressing them. This makes GCP vulnerability assessment and penetration testing different in terms of time spent, skill-set required, and costs.

Penetration testers use a 3-phased approach to penetration testing. The phases are listed below:

  1. Planning and reconnaissance
  2. Attack
  3. Reporting

Common exploitation tricks/ techniques to
break into Google cloud infrastructure

1. Gaining access to compromise network

Attackers gain access after trying reverse shell access by uploading a backdoor through the platform upload system or command injection.

2. Nefarious data manipulation attack (Insertion, Modification and Deletion)

The hacker uses insertion, modification and deletion attacks to do harm either by using a script or an automated tool. He could try to upload a backdoor through the platform upload system or command injection.

3. Hacking authentication mechanism and bypass authorisation restrictions

The attacker hacks authentication mechanisms, such as authorisation tokens for SDK, Google cloud portal APIs etc to perform privilege escalations within your GCP environment.

4. Elevating privileges and escalating account access

The hacker uses a cloud data transfer service to upload a program that says it is being used for an authorised purpose, but in reality, runs malicious code within your Google cloud environment.

5. Direct code execution by uploading dangerous file types

This attack occurs when the attacker uploads a program of malicious code that gains control over your system and then executes itself within the cloud environment.

Methods used by hackers to break into Google cloud infrastructure

GCP Penetration Testing Methodology

Our security testing approach involves benchmark based assessments as well as standard GCP penetration testing methodology extended to include Microsoft cloud specific security concerns. We support industry-leading testing standards and methodologies unless the scope is a red team:

  • OWASP
  • Mitre Att&ck Framework
  • Penetration Testing Execution Standard
  • NIST SP 800-115
Identity and Access Management1
This phase in a penetration test involves reviewing identity and access management related Google cloud controls. Generally, these include checks on the use of higher privilege accounts, use of MFA, password policy, IAM policies, access keys and credentials usage policies.
Review Authentication Architectures2
Authentication and authorisation problems are prevalent security risks. Most mobile apps or GCP web applications implement user authentication. Even though part of the authentication and state management logic is performed by the back end service, authentication is such an integral part of most mobile app architectures that understanding its common implementations is important.
Network Security3
his area involves checks around network security controls such as ingress, egress rulesets, flow logging, traffic restrictions, and least access privileges.
Logging API Calls, Events4
All major cloud service providers offer web services that record API calls for tenant account. This information contains various parameters such as API source, calls details, requests/response elements. This phase includes a review of API calls for an account, log file validation, encryption at rest, access checks if logs are restricted from public view and access logging, configuration management and monitoring options.
Monitoring5
The monitoring phase is one of the critical tasks responsible for alerting relevant contacts during an incident. This involves reliance on the logging and related configuration parameters to ensure right metric filters are in place. These reviews include checks for real-time monitoring configuration, alarms for any changes made to access control lists, security policy/groups, routing tables, and related parameters.

Types of Google Cloud Penetration Testing

Black Box Testing

In this approach, testers simulate attacks without prior knowledge or access to your cloud systems. They rely solely on publicly available information, making it a realistic assessment of your security against external threats.

White Box Testing

Here, testers are granted admin-level access to your Google Cloud systems, enabling them to thoroughly analyze the internal infrastructure and configurations. Also referred to as visible penetration testing, this method provides deep insight into potential vulnerabilities.

Gray Box Testing

Combining elements of both black and white box testing, grey box testing simulates attacks by internal users with limited access or external hackers. It evaluates the organization's ability to detect, respond to, and mitigate attacks under varying levels of access and visibility.

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