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Services/Defensive Security and Operations

AWS Hardening

Hardening of public cloud environments, focused on identities, audit trails, logging, network and security configurations.

Ongoing deliveryDiscuss AWS hardening
// Sobre

What we deliver

In this service we apply hardening focused on one of the major public cloud providers. We cover identity and access management, audit trails, monitoring and logging, storage, network segmentation and security groups, organizational policies and security posture consolidation. The goal is to reduce the attack surface, make operations more predictable and align the environment with recognized best practices and benchmarks, with traceability for audits.

// Contexto

The problem it solves

Environments with permissive access policies, disabled or incomplete trails, inconsistent logging, open network rules and no coherent organizational policies.

Who it is for

Infrastructure, DevOps and security teams that need to harden the environment without stopping operations.

When to hire

After the cloud security assessment, before audits, when there are known configuration gaps or as part of an ongoing security program.

// Coverage

Scope of work

Access policies, roles, MFA and keys
Audit trails: configuration, integrity and storage
Monitoring and logging: metrics and alarms
Network segmentation: security groups, ACLs and flows
Storage: policies, encryption and public exposure
Organizational policies and account consolidation
// Output

Deliverables

Hardening checklist with status per control
Infrastructure as code for the applied controls
Technical documentation of each adjustment
Runbooks to maintain the controls
// In practice

How the work happens, in practice

Identity and access controls

Root account protection (MFA, no access keys, used only for tasks that require it), multi-factor authentication for users, least-privilege roles instead of users with long-lived keys, use of IAM Identity Center for human access, analysis of external access with IAM Access Analyzer and periodic review of unused permissions. In accounts with many teams, organizational policies (SCPs in AWS Organizations) set limits that no individual account can exceed, such as preventing CloudTrail from being disabled or unauthorized regions from being used.

Audit trail, logging and detection

CloudTrail enabled in all regions, with file integrity validation and storage in a restricted-access bucket; AWS Config to track configuration changes and evaluate compliance rules; GuardDuty to detect suspicious behavior and Security Hub to consolidate findings and evaluate standards such as the CIS AWS Foundations Benchmark; VPC flow logs and alarms for critical events, such as root account usage and changes to IAM policies. The trail must exist before the incident, not after, and ideally be centralized in a separate account.

Network, storage and encryption

Security groups and ACLs with the minimum number of open ports, no 0.0.0.0/0 on remote administration, segmentation between environments, account-level public access blocking on S3 buckets, encryption at rest and in transit (TLS), use of AWS KMS with well-defined key policies and IMDSv2 on EC2 instances. VPC endpoints reduce AWS service traffic over the internet. When the environment uses infrastructure as code, such as Terraform or CloudFormation, the controls are applied and verified through the same workflow, which avoids manual drift and makes auditing easier.

// Diferenciais

What sets us apart

  • Depth in the chosen provider, not a generic approach
  • Hardening implementation, not just recommended
  • Reproducible code delivered for maintenance and audits
// Processo

Methodology

01

Assessment of the current baseline

02

Prioritization of controls

03

Hardening implementation

04

Validation and testing

05

Documentation and knowledge transfer

// Destaques

Highlights

Hardening based on a foundations benchmark for the chosen provider
Applied with infrastructure as code whenever possible
Validation without unnecessary impact on running operations
Documentation of every control applied, for governance
// FAQ

Frequently asked questions

Can hardening affect production services?

Each control is validated before it is applied. Critical changes are applied in a maintenance window with a documented rollback.

Do you work with infrastructure as code?

Yes. When the environment already uses infrastructure automation, we integrate the controls into the existing flow. When it does not, we deliver the code for future adoption.

// Próximo passo

Ready to move forward?

Tell us about your context and challenges. We reply with a clear proposal.