Cloud Security

Cloud Security

What I Do

I provide comprehensive protection for cloud environments through identity management, network security, data protection, compliance controls, and threat detection. I help organizations implement defense-in-depth strategies across their cloud infrastructure.

When to Use Me

• Securing multi-cloud or hybrid environments
• Meeting compliance requirements (SOC2, HIPAA, PCI-DSS)
• Implementing zero-trust security models
• Protecting sensitive data in the cloud
• Detecting and responding to threats
• Managing cloud access at scale
• Automating security compliance

Core Concepts

• Identity and Access Management (IAM): User roles, policies, permissions
• Network Security Groups/Firewalls: Traffic filtering at multiple layers
• Encryption at Rest/Transit: Protecting data in all states
• Secret Management: Secure storage for credentials, API keys
• Shared Responsibility Model: Understanding provider vs. customer responsibilities
• Cloud Security Posture Management (CSPM): Continuous compliance monitoring
• Cloud Workload Protection (CWP): Runtime security for workloads
• Zero Trust Architecture: Never trust, always verify
• Data Classification: Labeling and protecting based on sensitivity
• Audit Logging: Comprehensive activity tracking

Code Examples

AWS IAM Policy (JSON):

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowS3ReadOnly",
      "Effect": "Allow",
      "Action": [
        "s3:GetObject",
        "s3:GetObjectVersion"
      ],
      "Resource": "arn:aws:s3:::secure-bucket/*"
    },
    {
      "Sid": "AllowEC2Management",
      "Effect": "Allow",
      "Action": [
        "ec2:Describe*",
        "ec2:GetConsole*"
      ],
      "Resource": "*",
      "Condition": {
        "IpAddress": {
          "aws:SourceIp": "10.0.0.0/8"
        }
      }
    },
    {
      "Sid": "DenyPublicRead",
      "Effect": "Deny",
      "Action": [
        "s3:PutObject",
        "s3:PutObjectAcl"
      ],
      "Resource": "arn:aws:s3:::public-bucket/*",
      "Condition": {
        "Bool": {
          "aws:SecureTransport": "false"
        }
      }
    }
  ]
}

Azure Security Policy (YAML):

apiVersion: policy.azure.com/v1
kind: PolicyAssignment
metadata:
  name: require-encryption
  displayName: Require encryption for storage
spec:
  parameters:
    effect: deny
  policyDefinitionReferenceId: storageRequireEncryption
  displayName: Require encryption for storage accounts
  description: This policy denies storage accounts that don't enable encryption
---
apiVersion: policy.azure.com/v1
kind: PolicyDefinition
metadata:
  name: storageRequireEncryption
spec:
  mode: All
  parameters:
    effect:
      type: String
      defaultValue: Audit
  policyRule:
    if:
      field: type
      equals: Microsoft.Storage/storageAccounts
      not:
        field: Microsoft.Storage/storageAccounts/enableHttpsTrafficOnly
        equals: "true"
    then:
      effect: "[[parameters.effect]]"

Kubernetes NetworkPolicy (YAML):

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: backend-policy
  namespace: production
spec:
  podSelector:
    matchLabels:
      app: backend
      tier: api
  policyTypes:
  - Ingress
  - Egress
  ingress:
  - from:
    - podSelector:
        matchLabels:
          app: frontend
    - namespaceSelector:
        matchLabels:
          name: ingress-nginx
    ports:
    - protocol: TCP
      port: 8080
  egress:
  - to:
    - podSelector:
        matchLabels:
          app: database
    ports:
    - protocol: TCP
      port: 5432
  - to:
    - namespaceSelector: {}
      podSelector:
        matchLabels:
          k8s-app: kube-dns
    ports:
    - protocol: UDP
      port: 53

Terraform Sentinel Policy (Pseudo-code):

import "tfplan/v2" as tfplan

# Restrict resource types
allowed_resources = [
  "aws_instance",
  "aws_s3_bucket",
  "aws_db_instance",
  "aws_security_group"
]

deny_invalid_resources = rule tfplan.resource_changes {
  all resource_changes as _, rc {
    all rc.change.actions as action {
      action is "create" implies
        rc.type in allowed_resources
    }
  }
}

# Require tags
require_tags = rule tfplan.resource_changes {
  all resource_changes as _, rc {
    rc.type contains "aws_" and
    rc.type not contains "iam_" implies
      keys(rc.change.after) contains "Environment" and
      keys(rc.change.after) contains "ManagedBy"
  }
}

main = rule {
  (deny_invalid_resources and require_tags) else false
}

Best Practices

1. Implement least privilege - Grant minimum permissions required
2. Use MFA everywhere - Enforce multi-factor authentication
3. Enable comprehensive logging - CloudTrail, Activity Log, Audit Logs
4. Encrypt all data - At rest and in transit, managed keys preferred
5. Segment networks - VPCs, security groups, private subnets
6. Automate security scanning - CI/CD pipeline security checks
7. Regularly audit permissions - Remove unused access rights
8. Use secrets management services - Never hardcode credentials
9. Implement WAF and DDoS protection - Edge security services
10. Conduct regular penetration tests - Identify vulnerabilities proactively