Custom Regex Rules & Proprietary Profiles
Adapt the Engine to Your Specific Architecture
AI Summary / Key Takeaways
"Go beyond standard PII. Define unlimited proprietary Regular Expressions to catch bespoke company data like internal project codes, employee IDs, or distinct ledger numbers."
Enterprise-Grade AI Privacy
Add custom redaction rules and priority support with PRO.

The Problem
Standard out-of-the-box DLP systems fail to detect bespoke formatting for proprietary enterprise data. Custom development on cloud platforms costs thousands of dollars and months of procurement. Teams desperately need instant formatting adaptations.
How It Works
Define Pattern
Write a standard regex rule for your format (e.g., ^PROJ-\d{4}$).
Set Output Token
Assign a custom replacement token like [SECRET_PROJ].
Execute
The custom rule is seamlessly injected into the zero-trust scanning engine.
How This Feature Improved Workflows
Simple Explanation: Tailoring Your Protection
Not all sensitive data is "Personal". Your company might have internal codes (like APOLLO-99) that are top secret. A standard tool won't know those are important—but you can tell PrivacyScrubber exactly what to look for.
The "Pattern" (Input)
Example: ^ID-[0-9]{5}$
You define a "Regular Expression"—a mathematical way to describe a format (like 'ID- followed by 5 numbers').
The "Token" (Output)
Example: [EMPLOYEE_ID]
You decide what the label should look like. Now, every time the tool sees that format, it swaps it for your custom label.
Dynamic Syntax Implementation
Rigid DLP platforms break down when encountering bespoke proprietary structures. Custom Regex Modifiers allow an organization to rapidly expand the Zero-Trust dictionary with zero backend engineering required.
ECMAScript Regex Compatibility
Unlike external Python-based regex architectures over REST, the PrivacyScrubber regex injection leverages the native ECMAScript standard. This brings full support for complex lookaheads, capture groups, and boundary assertions without taxing processing speeds—resulting in multi-megabyte scanning completed in fractions of a second.
Feature Reliability & Audit
This enterprise feature is powered by our Local-First Sanitization Engine. Unlike legacy cloud DLP tools, PrivacyScrubber processes your Custom Regex Rules & Proprietary Profiles logic 100% within your browser's V8 sandbox. This architectural decision ensures that even the most complex detection patterns never expose raw data to an external API.
Airplane Mode
Verified feature operational integrity without network connectivity.
Frequently Asked Questions
What regex flavor does the engine support?
Because PrivacyScrubber relies on local execution, it supports standard Javascript Regular Expressions (ECMAScript flavor), enabling advanced features like lookaheads and capture groups.
Can I save my custom rules?
Yes. Custom rules execute instantly in the PRO tier. Teams and Enterprise users can export their rule sets to share uniformly across an entire organization.
Does adding complex regex slow down the engine?
Client-side JS runs V8 (or equivalent) C++ optimized regex engines natively. Even with dozens of complex custom rules, the scanning process takes only a fraction of a millisecond longer.
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