Learn about common vulnerabilities and exploitation techniques in cloud infrastructures. Discover how to mitigate risks through an offensive approach and advanced red teaming.
The cloud is now at the heart of modern businesses: applications, sensitive data, and critical infrastructure all reside there.
But cloud security isn't automatic:even small configuration errors can expose an entire environment.
Attacks on cloud infrastructure are becoming increasingly sophisticated and often go unnoticed until significant damage has been done. In this article, we explore the most common risks, the techniques used by attackers, and how an offensive approach can help prevent them.
Why the Cloud Is a Prime Target
- Concentration of sensitive data: identities, credentials, IP addresses, corporate databases.
- A broad and complex attack surface: multiple services, APIs, storage systems, and permissions.
- Common misconfigurations: overly permissive IAM roles, public buckets, and exposed APIs.
- Implicit trust between services: microservices often communicate freely, creating entry points for attackers.
Common Mistakes That Put Companies at Risk
- Misconfigured IAM: Excessive permissions or incorrect roles allow privilege escalation.
- Keys stored in public repositories: GitHub, GitLab, or shared storage.
- Public S3 buckets or blob storage: sensitive data accessible to anyone.
- Outdated services: Known vulnerabilities are still present in containers or VMs.
- Lack of logging and monitoring: an attack can go unnoticed for days or weeks.
- Lack of network segmentation: an attack originating from a compromised service can spread throughout the entire environment.
Most Common Exploitation Techniques
1. Cloud enumeration
Attackers gather information about active services, IAM roles, buckets, and API endpoints.
Even small details can reveal privileged access.
2. Privilege Escalation
From the compromise of a user with minimal permissions to an admin role, due to policy errors, trust relationships, or faulty configurations.
3. Access to Secrets
API keys, passwords, or tokens stored in code or accessible storage can lead to the immediate compromise of services and data.
4. Abuse of Listed Services
Management services, databases, and containers exposed to the Internet may be targets of direct exploitation.
5. Invisible Persistence
Create service users, lambda functions, or shadow accounts to maintain access even after detection.
How an Offense-First Team Minimizes Risks
An experienced cloud Red Team can simulate real-world attacks, assess the environment’s resilience, and provide practical recommendations:
- Cloud Penetration Testing: Controlled Simulation of System Compromise.
- IAM Audit and Privilege Escalation: Identifying Excessive Permissions or Risky Configurations.
- Discovery and Protection of Secrets: Identifying Exposed Keys and Tokens.
- Scenario-Based Purple Teaming: Validating the Detection Capabilities of the Cloud SOC.
- Guided Remediation: Practical Tips for Hardening and Continuous Monitoring.
Real-world examples of simulated attacks by the Red Team
- Public S3 buckets: sensitive data can be downloaded without authentication.
- Tokens exposed on GitHub: immediate access to production databases.
- Exposed container services: the possibility of deploying malicious containers within the infrastructure.
These scenarios highlight whyan offensive approach is essential for uncovering risks that traditional audits fail to detect.
Cloud security isn't a "set-and-forget" affair: it requires continuous monitoring, penetration testing, and attention to detail.
Every misconfiguration, every excessive permission, or every exposed key can become a gateway for attackers.
