Email Is the Primary Attack Vector
More than 90% of cyberattacks start in the inbox. Email is the easiest way for attackers to reach your team directly, bypassing network controls and targeting the human element. Phishing, ransomware delivery, business email compromise, and impersonation attacks all begin with a message that looks legitimate enough to act on.
Basic spam filtering stops the obvious threats. Advanced email attack protection goes further, using AI-driven detection, behavioral analysis, and threat intelligence to catch the sophisticated attacks that standard filters miss, before they reach your employees.
Beyond Spam Filtering
Most email platforms include basic filtering. What they don't reliably catch are targeted attacks: a spoofed email from your CEO asking for a wire transfer, a phishing link disguised as a Microsoft 365 login, or a malicious attachment that looks like a vendor invoice.
Advanced protection layers AI analysis, sandboxing, URL rewriting, and authentication enforcement on top of your existing email platform, catching threats that evade standard controls and reducing the window between delivery and damage.
Need reliable IT support for your business? Reach out to learn how STACK Cybersecurity can support your IT and cybersecurity.
What It Protects Against
Email-based attacks take many forms. Advanced protection is built to handle all of them, from mass phishing campaigns to highly targeted attacks crafted specifically for your business.
Phishing
Deceptive emails that trick employees into clicking malicious links, entering credentials on spoofed login pages, or opening infected attachments.
Business Email Compromise
Targeted attacks that impersonate executives, vendors, or trusted contacts to authorize fraudulent payments or extract sensitive information.
Malware and Ransomware
Malicious attachments and links that deliver malware or initiate ransomware infections, often disguised as invoices, shipping notices, or HR documents.
Impersonation
Emails that spoof your domain, a vendor's domain, or a trusted brand to appear legitimate and bypass employee suspicion.
Zero-Day Threats
Novel attacks with no existing signatures, detected through behavioral analysis and sandboxing rather than relying on known threat databases.
Account Takeover
Attacks that compromise a legitimate email account and use it to send malicious messages internally, bypassing sender reputation controls.
How Advanced Protection Works
Advanced email protection layers multiple detection methods so that threats missed by one layer are caught by another. Messages are analyzed before they reach the inbox, while they're in transit, and after delivery if threats are identified retroactively.
AI and machine learning analyze message content, sender reputation, behavioral patterns, and conversation context rather than relying on static signatures alone. Suspicious attachments run through sandboxing before delivery. Links are rewritten and scanned at click time. Authentication protocols including SPF, DKIM, and DMARC are enforced to verify sender legitimacy and block spoofed domains.
Protection Layers
No single detection method catches everything. Advanced email protection stacks multiple layers to close the gaps.
AI-Driven Detection
Machine learning analyzes message content, tone, sender history, and behavioral signals to identify threats that evade rule-based filtering.
Attachment Sandboxing
Suspicious attachments are detonated in an isolated environment before delivery so malicious behavior is identified without risk to your systems.
URL Rewriting
Links in emails are rewritten and scanned at click time, catching malicious destinations that were safe at delivery but became weaponized later.
Authentication Enforcement
SPF, DKIM, and DMARC policies are enforced to verify sender legitimacy and block spoofed domains before messages reach your team.
Is Your Inbox Protected?
If your email security relies on the built-in filtering from Microsoft 365 or Google Workspace alone, there are attacks getting through that you're not seeing. STACK can assess your current email security posture and layer advanced protection on top of your existing platform without disrupting your workflow.