Enterprise Email Security & Phishing Protection
Email remains the number one attack vector for ransomware, business email compromise (BEC), and credential theft. Petronella Technology Group deploys multi-layered email security architectures that stop phishing, malware, and impersonation attacks before they reach your inbox — backed by 24+ years of cybersecurity expertise serving the Research Triangle and beyond.
DMARC/DKIM/SPF • Advanced Threat Protection • Microsoft 365 Hardening • Phishing Simulation • BEC Prevention • Email DLP
Q: Why do businesses need dedicated email security? Over 90% of cyberattacks begin with a phishing email. Built-in email filters miss sophisticated attacks like business email compromise, spear phishing, and zero-day malware. PTG deploys enterprise-grade email protection including advanced threat sandboxing, AI-powered impersonation detection, and DMARC/DKIM/SPF authentication that stops attacks before they reach your users. Schedule a free assessment →
Why Default Email Security Is Not Enough
Attackers are getting more sophisticated every year. AI-generated phishing emails, deepfake voice messages, and targeted business email compromise campaigns bypass default filters with alarming regularity.
Comprehensive Email Protection Services
PTG deploys a defense-in-depth email security architecture that protects your organization at every layer — from DNS authentication to user awareness training.
Advanced Email Filtering & Sandboxing
Multi-engine scanning with attachment detonation in isolated sandboxes catches zero-day malware, malicious macros, and weaponized documents that signature-based filters miss. URL rewriting and time-of-click protection neutralize delayed phishing links that activate after delivery. PTG configures and monitors these systems to ensure maximum detection with minimal false positives impacting legitimate business communication.
DMARC, DKIM & SPF Authentication
PTG implements and monitors the three pillars of email authentication: SPF (authorized sending servers), DKIM (cryptographic message signing), and DMARC (policy enforcement and reporting). We deploy DMARC at enforcement level (p=reject) to prevent attackers from spoofing your domain in phishing campaigns targeting your clients, partners, and employees. Ongoing DMARC aggregate and forensic report monitoring ensures legitimate senders are never accidentally blocked.
Business Email Compromise (BEC) Prevention
AI-powered impersonation detection identifies emails that spoof executive names, vendor domains, and trusted contacts — even when they pass SPF and DKIM checks. PTG configures display name spoofing alerts, lookalike domain detection, and payment redirect warning systems that catch BEC attacks targeting accounts payable, wire transfers, and sensitive business communications before money moves.
Microsoft 365 Email Security Hardening
PTG hardens your Microsoft 365 email environment beyond default configurations: Exchange Online Protection tuning, Microsoft Defender for Office 365 optimization, Safe Attachments and Safe Links policy configuration, anti-phishing policy customization, and mail flow rule auditing. We close the security gaps that Microsoft's default settings leave open, including external sender tagging, forwarding rule restrictions, and OAuth app permissions review. See our Microsoft 365 services.
Phishing Simulation & Security Awareness Training
Technology alone cannot stop every attack. PTG's security awareness training program includes realistic phishing simulations customized to your industry, automated training enrollment for employees who click, role-based curriculum for finance and executive staff, and measurable reduction in click rates over time. We track behavioral changes and provide quarterly reports showing your organization's phishing resilience improving.
Email Data Loss Prevention (DLP)
Prevent sensitive data from leaving your organization via email. PTG configures DLP policies that detect and block emails containing credit card numbers, Social Security numbers, protected health information (PHI), Controlled Unclassified Information (CUI), and custom data patterns specific to your business. Policy actions range from user warnings to automatic encryption to full message blocking, with exception workflows for legitimate business needs.
How PTG Secures Your Email Environment
Assess
Comprehensive audit of your current email security posture: authentication records, filter configurations, mail flow rules, user behavior patterns, and historical attack data.
Design
Architecture blueprint for multi-layered email protection tailored to your email platform, compliance requirements, and risk tolerance.
Deploy
Implement filtering, authentication, DLP, and training systems with careful change management to avoid disrupting legitimate email flow.
Monitor & Optimize
Ongoing monitoring, DMARC reporting analysis, false positive tuning, threat intelligence updates, and quarterly phishing simulation campaigns.
Email Security for Regulated Industries
PTG's email security solutions are designed to satisfy the email-specific requirements of major compliance frameworks.
HIPAA
Email encryption for ePHI transmission, access controls on email accounts, audit logging for email containing patient data, and HIPAA Business Associate agreement compliance for email service providers.
CMMC / NIST 800-171
CUI protection in email communications, FIPS-validated encryption for CUI in transit, access control enforcement for CMMC compliance, and audit logging of all email events involving controlled information.
PCI DSS 4.0
Prevent cardholder data transmission via email, DLP policies blocking PAN and CVV data, strong authentication for email accounts with access to payment systems, and PCI DSS compliance documentation.
Email Security Questions, Answered
What is DMARC and why does my business need it?
DMARC (Domain-based Message Authentication, Reporting and Conformance) is an email authentication protocol that prevents attackers from sending emails that appear to come from your domain. Without DMARC at enforcement level, anyone can send phishing emails impersonating your company to your clients, vendors, and partners. PTG implements DMARC alongside SPF and DKIM, monitors aggregate reports, and works toward a p=reject policy that blocks unauthorized senders from spoofing your domain.
How do you protect against business email compromise (BEC)?
BEC attacks rely on social engineering rather than malware, making them invisible to traditional filters. PTG deploys AI-powered impersonation detection that analyzes sender behavior patterns, display name spoofing, lookalike domains, and email header anomalies. We configure payment verification workflows, external sender warnings, and executive account monitoring that catch BEC attempts targeting wire transfers, invoice fraud, and W-2 theft.
Do you support Microsoft 365, Google Workspace, or both?
PTG provides email security services for both Microsoft 365 and Google Workspace environments, as well as on-premises Exchange servers and hybrid configurations. Our most common deployment is Microsoft 365 with Defender for Office 365, supplemented by third-party advanced threat protection when the threat profile warrants additional layers. We optimize whichever platform you use rather than forcing a technology change.
How effective are phishing simulations at reducing risk?
Organizations that run regular phishing simulations typically see click rates drop from 30-40% to under 5% within 12 months. PTG's phishing simulation program uses industry-specific lures, progressive difficulty levels, and immediate training delivery for employees who click. We track metrics over time and provide quarterly executive reports showing measurable improvement in your organization's human firewall.
Can PTG help if we have already been compromised via email?
Yes. PTG's incident response team handles email compromise investigations including mailbox forensics, mail flow rule auditing (attackers often create hidden forwarding rules), OAuth application review, credential reset coordination, and business impact assessment. Our licensed digital forensics examiners can trace the attack chain, identify what data was accessed or exfiltrated, and produce evidence for legal or regulatory proceedings.
What does PTG's email security assessment include?
Our free email security assessment reviews your current SPF, DKIM, and DMARC records, evaluates your email filtering configuration, checks for common misconfigurations in Microsoft 365 or Google Workspace, identifies mail flow rules that could indicate compromise, and provides a prioritized remediation roadmap. The assessment takes approximately one hour and delivers actionable findings you can implement immediately. Call 919-348-4912 to schedule yours.
Stop Email Attacks Before They Reach Your Inbox
Schedule a free email security assessment with PTG. We will evaluate your current email defenses, identify gaps attackers could exploit, and recommend a protection strategy tailored to your business and compliance requirements.
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