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src/content/docs/ai-observability/filter-pii.mdx

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+---
+title: 'Remove PII with drop filters'
+metaDescription: 'Drop filters use regex to filter out personally identifying information before it reaches our databases.'
+freshnessValidatedDate: never
+---
+
+When you monitor your AI-powered app, you may want to drop sensitive data before it enters the New Relic Database (NRDB). Drop rules let you create NRQL queries that filter for personally identifiable information (PII), like birthdays or social security numbers, using regex. This prevents any data from entering into NRDB, protecting you and your customers from theft. 
+
+SCREENSHOT HERE 
+
+## Build your drop filters [#sec-compliance]
+
+Each drop filter builds off the 
+
+* `LlmChatCompletion`
+* `LlmTool`
+* `LlmChain events`
+* `LlmChatCompletionSummary`
+* `LlmChatCompletionMessage`
+
+## Create drop filters [#create]
+
+Drop filters make it possible to drop PII, but there are some steps you must do to stay fully protected. Read these procedures carefully as you make your first drop rule.
+
+<Steps>
+    <Step>
+
+    ## Go to the drop filters page
+
+        Go to **[one.newrelic.com > All Capabilities > AI Monitoring > Drop filters](https://onenr.io/0PoR8KlvYwG)**, then click **Create drop filter**. 
+
+    </Step>
+    <Step>
+
+    ## Create a drop filter 
+
+    Drop filters use NRQL queries to drop sensitive data. Here are three examples of a NRQL query using regex to locate and drop sensitive data:
+
+        * EXAMPLE
+        * EXAMPLE
+        * EXAMPLE 
+
+    There's a secion at the end of this procedure with regex samples to get you started with drop filters. 
+
+    </Step>
+    <Step>
+
+    ## Add drop filter to four additional tables
+
+        New Relic stores its data in five different tables. When you create a drop filter to drop one kind of data (say, a birth date), you need to repeat the process four additional times to account for those five tables. 
+
+    </Step>
+    <Step>
+
+    ## Test your drop filter
+
+    To test your drop filter, ELEPHANT 
+
+    </Step>
+</Steps>
+
+## Sample expressions [#regex-ref]
+
+Below, we've provided some sample regex expressions to obfuscate some of the most common sensitive data types. Obfuscation expressions must be created for each New Relic account where those expressions will be in use.
+
+<Callout variant="tip">
+  The following examples are regular expressions you could use in the UI. To use these in GraphQL, you'd need to escape them as shown in this [example](#expressions-create).
+</Callout>
+
+<CollapserGroup>
+  <Collapser
+    id="ssn"
+    title="US social security number"
+  >
+    **Expression:**
+    ```
+    (\d{3}[-\s\.]?\d{2}[-\s\.]?\d{4})
+    ```
+  </Collapser>
+
+  <Collapser
+    id="ccn"
+    title="Credit card number"
+  >
+    **Expression:**
+    ```
+    ((?:(?:4\d{3})|(?:5[1-5]\d{2})|6(?:011|5[0-9]{2}))(?:-?|\040?)(?:\d{4}(?:-?|\040?)){3}|(?:3[4,7]\d{2})(?:-?|\040?)\d{6}(?:-?|\040?)\d{5})
+    ```
+  </Collapser>
+
+  <Collapser
+    id="dob"
+    title="US Date of birth"
+  >
+    **Expression:**
+    ```
+    ((?:\d{2})?\d\d(?:\\)?(?:\/)?\d\d(?:\\)?(?:\/)?\d{2}(?:\d{2})?)
+    ```
+  </Collapser>
+
+  <Collapser
+    id="email"
+    title="Email address"
+  >
+    **Expression:**
+    ```
+    ([a-zA-Z0-9!#$'*+?^_`{|}~.-]+(?:@|%40)(?:[a-zA-Z0-9-]+\.)+[a-zA-Z0-9-]+)
+    ```
+  </Collapser>
+
+  <Collapser
+    id="ipv4"
+    title="IP address (ipv4)"
+  >
+    **Expression:**
+    ```
+    ^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$
+    ```
+  </Collapser>
+
+  <Collapser
+    id="usstreetaddress"
+    title="US street address"
+  >
+    **Expression:**
+    ```
+    /\d{1,}(\s{1}\w{1,})(\s{1}?\w{1,})/g
+    ```
+  </Collapser>
+
+  <Collapser
+    id="usphone"
+    title="US phone number"
+  >
+    **Expression:**
+    ```
+    (^[\+]?[1]?[\W]?[(]?[0-9]{3}[)]?[-\s\.]?[0-9]{3}[-\s\.]?[0-9]{4})
+    ```
+  </Collapser>
+
+  <Collapser
+    id="uspassport"
+    title="US passport number"
+  >
+    **Expression:**
+    ```
+    ([a-zA-Z]?\d?\d{5,8})
+    ```
+  </Collapser>
+
+  <Collapser
+    id="uknino"
+    title="UK national insurance number (NINO)"
+  >
+    **Expression:**
+    ```
+    ([a-zA-Z]{2}[-\s]?\d{2}[-\s]?\d{2}[-\s]?\d{2}[-\s]?[a-dA-D])
+    ```
+  </Collapser>
+
+  <Collapser
+    id="spainnid"
+    title="Spain National ID (NIE/DNI/NIF)"
+  >
+    **Expression:**
+    ```
+    ([a-zA-Z]?[-\s]?\d{7,8}[-\s]?[a-zA-Z])
+    ```
+  </Collapser>
+
+  <Collapser
+    id="indiapanid"
+    title="India PAN ID"
+  >
+    **Expression:**
+    ```
+    ^([a-zA-Z]){5}([0-9]){4}([a-zA-Z]){1}?$
+    ```
+  </Collapser>
+
+  <Collapser
+    id="indiaaadhaar"
+    title="India AADHAAR ID"
+  >
+    **Expression:**
+    ```
+    ^([2-9]{1}[0-9]{3}\s\d{4}\s\d{4})$
+    ```
+  </Collapser>
+
+  <Collapser
+    id="caphin"
+    title="Canada personal health/social insurance number (PHIN/SIN)"
+  >
+    **Expression:**
+    ```
+    (\d{3}[-\s\.]?\d{3}[-\s\.]?\d{3})
+    ```
+  </Collapser>
+
+  <Collapser
+    id="cahcn"
+    title="Canada health card number"
+  >
+    **Expression:**
+    ```
+    (\d{10})
+    ```
+  </Collapser>
+
+</CollapserGroup>
+
+## What's next? [#whats-next]
+
+blahblahblah