OptimaTech Email Security

Solution Overview

In today’s threat landscape, over 90% of cyberattacks begin with an email. Conventional spam filters are no longer enough to stop sophisticated Phishing, Ransomware, and Business Email Compromise (BEC).

OptimaTech Limited has partnered with cybersecurity specialists Green Radar to provide grMail, a fully managed email security service. grMail combines Advanced AI Deep Learning with a dedicated Security Operations Center (SOC). We turn email security into a seamless service, allowing your business to stay protected without the need for additional internal IT resources.

Why Choose grMail via OptimaTech?

As an Authorized Reseller, OptimaTech Limited brings over 20 years of technical expertise to the table, offering more than just a software license:

Flexible Subscription Models: We offer scalable licensing to help you optimize your cybersecurity budget based on your actual headcount.

End-to-End Deployment & Configuration: Our technical team manages the full rollout, from initial setup and policy configuration to system integration. We ensure your email security is correctly implemented from day one, reducing risk, downtime, and internal workload.

Ongoing Expert Support: Receive responsive, hands-on technical support for daily operations, policy tuning, and troubleshooting without relying on generic documentation or offshore helpdesks.

Joint Vendor-Level Escalation: For critical incidents, OptimaTech works directly with the Green Radar 24/7 SOC team. This coordinated escalation ensures faster resolution and access to deeper technical expertise when it matters most.

A Leading Cloud Cybersecurity Leader in APAC

Green Radar is a cloud-native cybersecurity service provider dedicated to redefining how organizations protect themselves. Their mission is to make the adoption of cutting-edge cybersecurity practices simple and accessible for businesses of all sizes.

Corporate Strength & Heritage Green Radar is a member of Edvance International Holdings Limited (1410.HK), a premier cybersecurity and innovative technology group headquartered in Hong Kong. This strong foundation enables Green Radar to deliver enterprise-grade security with deep local expertise.

Advanced Technology & Intelligence At the heart of Green Radar’s solutions is a proprietary cloud-based platform that integrates:

• AI & Big Data: Utilizing deep learning to identify and intercept evolving cyber threats.
• Global Threat Intelligence: Leveraging a vast network of global data to defend against zero-day attacks in real-time.
• Managed Operations: Combining best-of-breed technology with a dedicated Security Operations Center (SOC) to provide “hassle-free” Managed Detection and Response (MDR) for clients.

Award-Winning Protection Green Radar is consistently recognized for its excellence in the cybersecurity industry, including:

• eZone eBrand Award 2022: Winner of “The Best Email Security Suite.”
• APAC CIO Outlook: Ranked as one of the “Top 10 Cyber Security Companies” in 2021.

Preventing Business Email Compromise (BEC) & CEO Fraud

The Challenge: A mid-sized enterprise was targeted by a Business Email Compromise (BEC) attack. An attacker impersonated the CEO using a “look-alike” domain, requesting an urgent wire transfer to a “new vendor.” Since the email contained no malicious links or attachments, traditional filters failed to flag it.

The Solution: grMail’s Anomaly Hunter and aidar® AI engine analyzed the email’s natural language patterns and metadata. The system identified a mismatch in the sender’s habitual communication style and flagged the “VIP Impersonation” risk. Green Radar’s Local Intelligence engine also recognized the brand spoofing attempt.

The Result: The fraudulent request was automatically quarantined before reaching the finance team. The company avoided a potential $200,000 financial loss and strengthened its internal verification protocols.

Neutralizing Zero-Day Phishing via URL Isolation

The Challenge: Employees received a “Password Reset” email that appeared to be from a legitimate service provider. The link led to a zero-day phishing site that was created only hours prior, meaning it was not yet on any global blacklists.

The Solution: grMail’s Zero-Day Protection (LinkSpect) and URL Isolation technology took effect. Instead of allowing the user to connect directly to the site, grMail opened the link in a secure, isolated environment. The aidar® AI detected suspicious credential-harvesting behavior on the page in real-time.

The Result: Even though the link was technically “unknown” to the world, the isolation layer prevented the user from entering their credentials. No accounts were compromised, and the threat was neutralized without manual intervention.

Enhancing Microsoft 365 / Google Workspace Security

The Challenge: A global logistics firm using Microsoft 365 found that sophisticated localized phishing attacks—specifically targeting regional banks and local shipping brands—were still slipping through default security layers.

The Solution: The firm integrated grMail as a complementary security layer. Using Multiphasic Scoring, grMail applied deeper content inspection and Local Intelligence specifically tuned for the Asian market. This caught regional threats that global filters often overlook.

The Result: The organization saw a 45% reduction in “hidden” threats reaching user inboxes. By adding a specialized AI-driven layer, they achieved a true “Defense in Depth” posture while maintaining the convenience of their cloud platform.

Managed Detection and Response (MDR) for Lean IT Teams

The Challenge: A professional services firm with a small IT team of three struggled to keep up with the volume of email security alerts. They lacked the resources for 24/7 monitoring and deep forensic investigation of suspicious emails.

The Solution: The firm deployed grMail with its integrated MDR SOC (Managed Detection and Response) service. Green Radar’s security experts took over the monitoring, triaging, and remediation of all email threats, providing 24/7 expert oversight.

The Result: The IT team was freed from “alert fatigue,” allowing them to focus on core business projects. With Investigation and Reporting provided by Green Radar, the firm also successfully met its IT compliance and audit requirements with ease.

Logistics & Maritime Sector

The Challenge: A global ship management company operating a large fleet faced a surge in localized email threats, including ransomware and sophisticated phishing. With crew and staff working across different time zones, their internal IT team was overwhelmed by the volume of security alerts and “alert fatigue.”

The Solution: By deploying grMail with its integrated Managed Detection and Response (MDR) service, the company gained 24/7 expert oversight. Green Radar’s SOC team handled the monitoring and remediation of all email threats, ensuring clean inboxes for both onshore and offshore staff.

Key Results:

Outcome: Secured mission-critical communications across international maritime routes.

Zero Operational Burden: The IT team saved hundreds of hours previously spent on manual email filtering.

Global Reliability: Achieved near-zero downtime and highly effective filtering for a distributed workforce.

Cybersecurity & Professional Services

The Challenge: A premier cybersecurity research and penetration testing firm was frequently targeted by hackers due to its high-profile nature. They required a solution that could handle “Spear Phishing” and zero-day attacks that often bypass standard cloud security filters.

The Solution: The firm implemented grMail’s URL Isolation and Advanced Anomaly Detection. By assuming all links are potentially malicious, the system opens them in a secure cloud-based “sandbox” environment, preventing any direct contact with the user’s device.

Key Results:

Outcome: Established a “Zero Trust” email posture for an organization of security experts.

Exceptional Accuracy: Successfully detected and rejected 61.5% of all inbound emails as malicious, without a single “false positive” complaint from employees.

Advanced Threat Neutralization: Prevented credential theft from zero-day phishing sites that were not yet on any global blacklists.

Public Utilities & Financial Institutions

The Challenge: Large organizations in the APAC financial and utility sectors are constant targets of brand impersonation. Attackers use localized language (e.g., Traditional Chinese/Cantonese) and spoofed local brand assets (like bank logos or utility bills) to deceive employees into revealing sensitive credentials.

The Solution: Leveraging the Green Radar Email Threat Index (GRETI) and localized threat intelligence, grMail identifies regional attack patterns. The aidar® AI engine specifically scans for brand spoofing and “look-alike” domains that target local institutions.

Key Results:

Outcome: Safeguarded corporate reputation and prevented multi-million dollar fraud attempts.

Localized Defense: Effectively blocked large-scale phishing campaigns mimicking major regional banks and logistics brands.

Reduced Financial Risk: Proactively quarantined Business Email Compromise (BEC) attempts before they reached the finance department.