Email Security
Advanced email security with AI-powered threat detection, anti-phishing, BEC protection, malware defense, and data loss prevention for Microsoft 365, Google Workspace, and on-premises Exchange.
91%
of cyberattacks start with email
$4.9M
average business email compromise cost
3.4B
phishing emails sent globally per day
99.9%
99.7%
99.8%
99.9%
99.5%
Defense in Depth
Multiple security layers work together to catch threats that bypass individual controls. Each layer adds detection capability and reduces risk.
1
Block connections from known malicious senders before accepting messages. Reputation checks, IP blacklists, and sender policy validation reject bad actors at the perimeter.
2
Analyze message headers, content, and attachments for spam, malware, and policy violations. Multi-engine scanning catches known threats with high confidence.
3
Machine learning analyzes message content, sender behavior, writing style, and context to detect sophisticated phishing, impersonation, and zero-day attacks that signatures miss.
4
Rewrite links for time-of-click analysis. Scan destination pages for phishing content, malware downloads, and credential harvesting. Block access to malicious sites.
5
Detonate suspicious attachments in isolated cloud sandbox environments. Behavioral analysis detects evasive malware that bypasses static scanning.
6
Continuously scan delivered messages. Automatically remediate threats discovered after delivery with clawback capabilities. Remove malicious messages from all affected mailboxes.
Threat Coverage
Comprehensive protection against the full spectrum of email-borne threats targeting your organization.
Credential harvesting attacks that impersonate trusted brands and trick users into revealing passwords and sensitive data.
Brand impersonation, fake login pages, OAuth consent phishing
Targeted attacks impersonating executives or vendors to trick employees into wire transfers or data disclosure.
CEO fraud, invoice fraud, payroll diversion
Malicious attachments and links that deliver ransomware payloads to encrypt files and demand payment.
Weaponized documents, malicious macros, dropper links
Trojans, keyloggers, and remote access tools delivered via email attachments or malicious links.
Emotet, QakBot, IcedID, Agent Tesla
Highly targeted attacks using personal information to craft convincing messages for specific individuals.
Executive targeting, board member attacks, M&A intel
Compromised vendor accounts used to send malicious messages from trusted business partners.
Vendor impersonation, invoice tampering, payment redirect
Compromised internal accounts used to send phishing and malware to trusted contacts.
Internal phishing, lateral movement, data theft
Sensitive data leaving the organization via email—intentionally or accidentally.
PII leakage, IP theft, compliance violations
Capabilities
AI and machine learning detect sophisticated attacks that bypass signature-based security.
Multi-layered phishing protection combining technical and behavioral analysis.
Detect and block business email compromise attempts targeting your executives and finance team.
Multi-engine scanning and sandbox analysis catch known and unknown malware.
Prevent sensitive data from leaving via email with content inspection and policy enforcement.
Protect sensitive communications with seamless encryption for recipients inside and outside your organization.
Detection Coverage
Display Name Spoofing
Fake sender name
Domain Spoofing
Forged From address
Lookalike Domains
Similar domain names
Header Manipulation
Altered email headers
Reply-To Mismatch
Different reply address
Free Email Abuse
Gmail/Yahoo impersonation
URL Obfuscation
Hidden malicious links
QR Code Phishing
Malicious QR codes
Weaponized Docs
Malicious Office files
HTML Smuggling
Evasive attachments
Thread Hijacking
Compromised conversations
Delayed Detonation
Time-delayed payloads
Email Authentication
Implement email authentication standards to prevent attackers from sending email as your domain.
Sender Verification
Sender Policy Framework specifies which mail servers are authorized to send email for your domain.
Message Integrity
DomainKeys Identified Mail adds cryptographic signatures to prove messages haven't been tampered with.
Policy Enforcement
Domain-based Message Authentication tells receivers what to do when SPF or DKIM fails.
Platform Support
Full API Integration
Native integration, inline protection, automated remediation
Full API Integration
Native integration, inline protection, automated remediation
Gateway Deployment
MX record routing, mail flow rules, hybrid support
Gateway Deployment
Universal protection for any mail platform
Deployment
Cloud Native
Connect directly to Microsoft 365 or Google Workspace via API for inline protection without MX changes.
Gateway
Route all inbound email through security gateway for inspection before delivery to your mail server.
Hybrid
Combine API integration with gateway protection for maximum coverage and defense in depth.
Capabilities
As a telecommunications and cloud provider, intSignal leverages the largest global private network and colocation facilities with direct access to ISPs, IXPs, and an extensive vendor ecosystem.
Continuous scanning identifies threats after delivery
Remove malicious messages from all mailboxes
Alert affected users about removed threats
Full investigation data for security teams
Technology Partners
Vendor-agnostic expertise across the email security ecosystem.
Enterprise email security leader with advanced threat protection, DLP, and security awareness training.
Cloud email security with continuity, archiving, and web security integration.
Native M365 protection with Safe Links, Safe Attachments, and anti-phishing policies.
AI-powered email security focused on BEC, account takeover, and socially-engineered attacks.
Human Layer
Technology alone cannot stop every attack. Build a human firewall with ongoing security awareness.
Regular simulated phishing campaigns measure employee susceptibility and reinforce training through real-world scenarios.
Engaging video-based modules teach employees to recognize phishing, BEC, and social engineering attacks.
Warning banners on suspicious emails educate users at the moment of risk with contextual guidance.
Easy-to-use report buttons encourage users to flag suspicious messages, creating a security-aware culture.
Our Services
Evaluate your current email security posture, test defenses with simulated attacks, and identify gaps. Includes DMARC/SPF/DKIM analysis.
Design, deploy, and configure email security solutions. Policy development, integration, and user rollout with minimal disruption.
Ongoing policy management, threat monitoring, and incident response. We handle the operations while you focus on business.
Free email security assessment identifies vulnerabilities in your current setup.