Seimitsu

Seimitsu

Seimitsu, Inc.

Savannah, Georgia, United States

Managed SecurityDetection & ResponseIncident ResponseDigital Forensics24/7 SOC
Founded 1984Serves SMB, Enterprise, Public Sector
Profile last updated: April 26, 2026

About

Founded in 1984, Seimitsu is a cybersecurity company based in Savannah, United States working in managed security, detection & response, incident response +6 more.

Seimitsu is a Savannah, Georgia based technology company founded in 1984 by Sam Cook and Cynthia D. Cook. It started as a local IT service provider and now offers managed IT services, cybersecurity and high-speed fiber internet and voice services through an underground fiber network in Savannah and surrounding areas. Its cybersecurity offering, branded TrueSecure, includes a virtual CISO program, a 24x7x365 security operations centre, managed endpoint detection and remediation, incident response, cyber awareness training, phishing campaigns, dark web monitoring, security policy development and security risk assessments based on NIST standards. Seimitsu serves national carriers, enterprises, small businesses, hospitals, healthcare providers, governmental agencies and educational institutions. Its broader business also includes the SouthernWaves fiber alliance with Southern Telecom and the TrueConnX Home residential fiber service.

Location

Savannah, United States

Founded

1984

Legal name

Seimitsu, Inc.

Focus areas

managed IT servicesvCISOSOCincident responsemanaged detection and responsecyber awareness trainingdark web monitoringfiber internet

Languages

EN

Services & products

Security domains

Managed SecurityDetection & ResponseIncident ResponseDigital ForensicsEndpoint SecuritySecurity AwarenessGRC & ComplianceData ProtectionIdentity & Access

How they deliver

Managed ServicesConsultingTrainingProfessional Services

Operations

Runs a 24/7 security operations centre

Products

TrueSecure Endpoint Security

EDR

Next-generation antivirus and managed endpoint detection and remediation for laptops, desktops and servers running Windows, Mac or Linux, monitored 24x7x365.

Breach Protection Platform

Security platform

Bundled security platform combining cyber awareness training, phishing campaigns, dark web monitoring, a security policy portal and security risk assessments for small and medium businesses.

Customers

SMBEnterprisePublic Sector

Industries served

HealthcareEducationGovernment

Compliance & partners

Compliance frameworks

HIPAAPCI DSSCMMCFERPANIST

Technology partners

CynetDuo

People

Management & team (3)

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