The Enable Filtering option in Custom Dimensions allows you to filter sensitive information and anonymize data before storing the data on the VWO server. All anonymized values are displayed as vwo_anonymized in the reports.
By default, VWO detects information formats for email addresses, credit cards, social security numbers, phone numbers, and looks for data that may contain authentication token and other unique data.
You can enable report filtering by enabling the option Enable Filtering present in Create a Custom Dimension dialog. For more information on how to enable custom dimensions, refer to Creating a Custom Dimension section.
NOTE: Use Blacklist (anonymize) or Whitelist options to ensure that no
sensitive information is captured in query parameters and sent to VWO.
To whitelist or unhide any global blacklist parameter, you can enter the
value in the Whitelist section. Similarly, to blacklist or hide any global
blacklist parameter, you can enter the value in the Blacklist section.
For example, to define a regex value for email, you can add the following
By default, VWO blacklist’s the following- email address, credit card number, passwords, SSN, and IP address.
1. The password field will always be anonymized, regardless of
whitelisting such fields.
2. For numerical inputs like credit card details, social security
numbers, or CVV, enabling anonymization will replace the actual
input with zeroes.
3. By default, VWO replaces the last octet of IP Address with 0
before saving it.