When we think about email security, our minds almost always jump to the inbound threats: the sophisticated phishing lures, the AI-generated business email compromise (BEC) attacks, and the malicious attachments knocking at the perimeter.
But there is a silent, internal crisis happening on the way out of your organization. And chances are, you’re flying completely blind to it.
According to product telemetry from KnowBe4’s Outbound Email Security, Prevent, organizations are typically only aware of roughly 10% of the outbound email security incidents that occur within their environments. The remaining 90% are incidents, like misdirected attachments, unencrypted PII, and lookalike domain impersonation attacks, go completely undetected.
Most sensitive data loss isn't the result of a malicious insider plotting corporate espionage. It’s driven by well-meaning employees making simple, everyday mistakes under pressure. Typing a name too quickly into Outlook's autocomplete and routing a payroll spreadsheet to someone in Sales and not an external vendor, is all it takes to trigger a massive compliance violation.
To erase this visibility gap and hand control back to IT administrators, KnowBe4 is proud to announce the launch of two powerful, self-serve features in our Prevent Standard offering: the DLP rule builder and misdirected content analysis. By deploying these self-serve outbound features in the Standard offering, we are completely removing the enterprise-tier paywalls and expensive professional services requirements that historically kept these tools out of reach for the small and mid-market organizations.
Historically, trying to solve outbound data leakage and misdirected emails has left small to mid-sized organizations stuck between two highly frustrating extremes:
The Passive Trap: Relying solely on retrospectively reviewing audit logs or waiting for an employee to courageously self-report a mistake. By the time an admin notices the error, the data is already out in the wild and a compliance violation might already be headed for your organization.
The Costly Expense: Critical DLP and relationship-aware matching have traditionally been tightly gated behind top-tier, expensive licensing suites (like Microsoft E5) or required weeks of costly third-party professional services to deploy and manage.
With Prevent, admins can now configure their DLP policies in a matter of minutes with no specialized support required.
With today's release, Prevent Standard users gain access to two distinct, complementary layers of outbound protection:
Prevent DLP Rule Builder: Autonomy Without Alert Fatigue: Admins can now independently build, customize, and manage sophisticated rules to block unauthorized emails containing structured sensitive data like PII, financial records, and medical data.
Score-Based Triggers: To eliminate the crippling alert fatigue caused by legacy tools, our builder utilizes advanced scoring thresholds. Instead of triggering a noisy, global block every time a single account number is mentioned, you can configure rules to only intervene if multiple high-risk data attributes are flagged together.
Compliance-Ready Controls: SOC teams can easily self-configure rules to stop unauthorized external communication, ensuring audit-readiness for strict regulations like HIPAA, GDPR, and PCI-DSS on their own terms.
2. Misdirected Content Analysis: The Right Information to the Right Person
Standard email filters only look at static text blocks. Prevent’s misdirected content analysis operates alongside the user, learning the unique communication DNA of your organization to understand true recipient relationships.
Context-Aware Protection: The system monitors for recipient anomalies and content mismatches. Even if an external email address is technically valid, the system catches near-miss errors if the attachment type or text context has never historically been shared with that specific recipient.
Bespoke Identifier Training: Admins aren't limited to generic templates. You can paste custom text-matching patterns directly into the UI, such as industry-specific Case IDs, Project Codes, or Client Numbers, to train the algorithm on data patterns unique to your business.
Other outbound security tools push users out of the loop, creating frustration without changing behavior. KnowBe4 takes a human-centric approach.
When an employee attempts to send an email that breaches a custom DLP rule or exhibits a recipient mismatch, Prevent intervenes at the exact point of send. Before the email leaves the environment, the user is presented with a real-time, contextual nudge directly inside Outlook or OWA explaining why the flag occurred.
Our data shows that content-related nudges are 2 to 3 times more likely to be accepted by end-users. By showing the user exactly why an interaction is risky, we actively correct the human behavior behind the mistake, improving security proficiency over time.
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