AWS Account Security Hardening
A hands-on engagement where we implement security controls and best practices across your AWS environment — not just recommendations, but deployed, tested, and documented improvements.
What is AWS Account Security Hardening?
AWS Account Security Hardening is a hands-on engagement where we implement security controls and best practices across your AWS environment. Beyond identifying problems, we actively configure guardrails: IAM policies, SCPs, logging, encryption, network controls, and observability.
We transform your AWS account from its current state into a hardened environment aligned to the CIS AWS Foundations Benchmark and the AWS Well-Architected Security Pillar.
This operational approach ensures that security improvements are not just recommended but deployed, tested, and documented.
Giving your team a secure baseline to build on.
security controls
Benchmark alignment
How do we harden AWS Account Security?
The engagement follows a structured methodology in four phases.
Assessment and Baseline
We perform an initial security assessment of the AWS account using AWS-native tools (Security Hub, Access Analyzer, Trusted Advisor) and manual discovery. We map the current state against the CIS AWS Foundations Benchmark and the AWS Well-Architected Security Pillar. We identify the gap between current posture and target hardening level, then agree on a prioritised implementation plan with the client.
Hardening Implementation
We implement security controls directly in the AWS environment, working alongside the client's team. This covers IAM hardening (least privilege policies, MFA enforcement, service control policies), CloudTrail and logging configuration across all regions, S3 bucket policies and public access blocks, VPC security groups and network ACL tightening, encryption enforcement (EBS, S3, RDS, secrets), GuardDuty, Config Rules, and automated compliance checks, and root account lockdown and break-glass procedures.
Validation and Testing
We validate every implemented control through automated compliance scanning and manual verification. We run a post-hardening assessment to confirm gap closure, document the residual risk for any controls deferred by mutual agreement, and produce a hardened configuration baseline document.
Handover and Documentation
We deliver a complete hardening report documenting every change made, the rationale, and rollback procedures. We conduct a knowledge transfer session with the client's operations team and provide runbooks for ongoing security maintenance.
Prerequisites
Administrative access to the AWS account (or paired sessions with an admin), an inventory of running services and their criticality, existing IAM policies and organisational structure, and a designated AWS/DevOps contact on the client side.
Securing AWS Infrastructure for Financial Services
A financial services firm needed to secure its AWS infrastructure to meet regulatory expectations and protect sensitive client data.
Tomeris conducted a comprehensive AWS account hardening, implementing over 40 security controls across IAM, networking, encryption, and monitoring. The engagement tightened IAM policies from broad wildcard permissions to least-privilege, enforced MFA across all accounts, and enabled encryption on all data stores.
Continuous compliance monitoring was deployed via Organization SCP and Resource Policy, providing real-time visibility into security posture across the environment.
The client achieved a compliant, audit-ready AWS posture within weeks, with full documentation enabling their internal team to maintain the hardened baseline independently.
Audit-ready AWS posture achieved within weeks
Results
Need AWS Account Security Hardening?
Harden your AWS environment with deployed, tested security controls aligned to the CIS AWS Foundations Benchmark.