Cybersecurity Companies in Stonecrest, GA

Cybersecurity Companies in Stonecrest, GA: What COMNEXIA Actually Delivers

Stonecrest businesses searching for cybersecurity companies in the Atlanta metro need more than a vendor who installs antivirus and sends a monthly invoice. COMNEXIA, headquartered in Roswell, GA and serving DeKalb County clients since 1991, builds layered security stacks around named, auditable controls. This page explains exactly what that means for your organization, which platforms are involved, and why the specifics matter for compliance-regulated industries operating in Stonecrest and across metro Atlanta.

The Security Stack COMNEXIA Deploys

Every engagement starts with endpoint detection and response. COMNEXIA deploys SentinelOne EDR or Microsoft Defender for Endpoint, depending on your existing Microsoft licensing tier, across every managed workstation and server. These are not signature-based scanners. SentinelOne uses behavioral AI to detect lateral movement and fileless attacks; Microsoft Defender for Endpoint feeds telemetry directly into a 24/7 SOC that reviews and responds to alerts around the clock. Stonecrest clients do not wait for a technician to check a dashboard in the morning.

Identity is the second layer. COMNEXIA configures Microsoft Entra ID conditional access policies that enforce MFA on every sign-in, block authentication from non-compliant devices, and restrict access by geographic location when appropriate. For businesses still running on-premises Active Directory, hybrid join configurations extend those policies to local resources without requiring a full cloud migration.

Cloud workloads get Microsoft Defender for Cloud applied at the subscription level, providing continuous security posture scoring and misconfiguration alerts across Azure-hosted resources. If your Stonecrest business runs workloads in Azure, this is the control that catches an exposed storage account or an overly permissive network security group before an attacker does.

Backup is configured to the 3-2-1 standard: three copies of data, on two different media types, with one copy stored off-site in immutable object storage. Immutability means ransomware that reaches your network cannot encrypt or delete the backup. Recovery testing is documented, not assumed.

Compliance Obligations Relevant to Stonecrest Businesses

Many DeKalb County businesses carry specific regulatory exposure. COMNEXIA maps the security stack to the standards that actually apply to your industry rather than applying every acronym to every client.

• FTC Safeguards Rule (16 CFR 314.4): Applies to financial institutions including auto dealerships. Requires a written information security program, risk assessment, encryption of customer financial data in transit and at rest, and annual penetration testing or vulnerability assessment. COMNEXIA implements the technical controls and produces the documentation the FTC requires.
• PCI DSS: Applies to any Stonecrest business processing card payments. Network segmentation, quarterly vulnerability scans, and logging of all access to cardholder data are concrete PCI requirements that COMNEXIA configures rather than just recommends.
• HIPAA Security Rule: Applies to healthcare practices and business associates in Stonecrest. COMNEXIA implements audit logging, access controls, and encrypted transmission of protected health information, and documents the risk analysis the Security Rule requires.
• CMMC (Cybersecurity Maturity Model Certification): Relevant for DeKalb County businesses with Department of Defense contracts. COMNEXIA can align your environment to CMMC Level 1 or Level 2 practices including access control, audit and accountability, and incident response documentation.

Auto Dealerships in the Stonecrest Area

Dealerships running CDK Global, Reynolds and Reynolds, or Dealertrack have DMS platforms that hold nonpublic personal information covered by the FTC Safeguards Rule. A CDK Global environment, for example, requires segmented network access so that DMS traffic does not share a broadcast domain with general office workstations. COMNEXIA configures VLAN segmentation, applies SentinelOne EDR to every endpoint including finance office machines, and enforces Entra ID MFA for any employee accessing CDK or Dealertrack portals through a browser. The June 2024 CDK Global cyberattack, which disrupted thousands of dealerships nationally, demonstrated that DMS connectivity is a direct attack surface. COMNEXIA's approach treats DMS vendor connections as untrusted by default and applies firewall rules and monitoring accordingly.

Security Awareness Training and Phishing Simulation

Technical controls stop a portion of attacks. Employees stop the rest. COMNEXIA runs phishing simulation campaigns on a scheduled cadence and assigns targeted training modules to users who click simulated lures. Reporting shows click rates by department, which gives Stonecrest managers a concrete metric rather than a vague assurance that training occurred.

Managed IT Foundation That Makes Security Work

Security controls require a stable, visible environment to function correctly. COMNEXIA manages endpoints through NinjaOne RMM, which enforces patch deployment within defined windows, provides real-time inventory, and flags out-of-compliance machines before they become vulnerabilities. Help desk support runs through a ticketing system with documented SLA tiers so that every issue has a record and an owner. Monthly reporting covers patch compliance rates, EDR alert summaries, and backup job status so that Stonecrest business owners have written evidence of their security posture.

Talk to a Cybersecurity Specialist Serving Stonecrest and Metro Atlanta

COMNEXIA has operated as a security-first MSP in the Atlanta metro for 35 years. If your Stonecrest business needs a cybersecurity partner that names the tools it uses and shows you the configurations, call (877) 600-6550 to schedule a no-obligation security assessment. We will review your current endpoint protection, identity controls, and backup posture and give you a written gap analysis.