Tableau Public Security Pitfalls & Best Practices
Tableau Public is a free version of Tableau where we can create and share our dashboards online. Anyone, whoever has access to Tableau Public can view our dashboard. It’s like posting something on social media. Once it’s shared, anyone can see it, share it, and even download it.
Publishing our dashboards on Tableau Public is a fantastic way to showcase our work, build a portfolio, and contribute to the data community. Tableau Public is public by default—and that introduces data security risks if we’re not vigilant.
Below are some common security pitfalls which is applicable to all level of users- Whether you’re a beginner or a seasoned analyst, to avoid and best practices to follow when publishing to Tableau Public.
Common Pitfalls to Avoid
1. Publishing Real or Sensitive Data
This is the biggest mistake many of us make. Tableau Public makes your data entirely accessible—anyone can download the workbook, extract the data, and even they can reverse-engineer our source.
Hence, if you’re using real names, patient info, salaries, or customer data — don’t publish it on Tableau Public. Anyone can download your data and use it.
Risks:
Personally Identifiable Information (PII)
Financial data
Confidential business metrics
Tip: Never upload real client or personal data. Use aggregated, anonymized, or dummy data instead.
2. Assuming Permissions Exist
Tableau Public doesn’t have permissions or access controls. In other words, we can’t limit who views, downloads, or shares our dashboard.
Tip: If your data requires access control, do not publish it to Tableau Public. Use Tableau Server or Tableau Cloud instead.
3. Forgetting Download Settings
By default, dashboards can be downloaded by others. While this is great for learning, it’s not always appropriate—especially if your design or business logic is proprietary.
Tip: Deselect the check box “Let others download or make copy of your visualization” under All Downloads and Copies section in the settings if needed.
4. Exposing Calculations and Business Logic
Even though our dashboard looks clean, formulas and calculations are still visible if someone downloads the workbook.
Tip: If you're using business logic or formulas that are sensitive, avoid publish them. Or use screenshots/images instead of live dashboards —if necessary.
5. Accidentally Linking to Internal /Private Sites
Sometimes you may add web links in your dashboard. If these go to internal or confidential websites, others might see things they shouldn’t.
Tip: Use placeholder or public URLs where possible. Only link to public websites or pages that everyone can access.
Best Practices for Safe Publishing
Use Sample or Masked Data
If you're demonstrating techniques, use:
Public datasets (e.g., Kaggle, data.gov)
Dummy datasets with realistic patterns
Masked identifiers (e.g., ID001 instead of full names)
Add a Data Disclaimer
If you're using simulated or public data, mention it directly on your dashboard or in the description. This builds transparency and avoids misinterpretation.
“Note: This dashboard uses simulated data for demonstration purposes only.”
Check Workbook Settings Before Publishing
Before you hit “Publish,” review:
Download settings
Workbook title & description
Hyperlinks
Hidden sheets/tooltips
Stay Informed on Tableau’s Public Policies
Tableau has clear Terms of Service and guidelines. Review them periodically to ensure you're not violating data use or licensing terms.
Version Control & Backup
Before uploading a final dashboard, save a local version with your full workbook, including comments or internal logic. Tableau Public doesn’t support version history or rollback.
Final Thoughts
Tableau Public is a powerful platform for showcasing your creativity, but it’s also a shared space. Being mindful about what you publish protects your reputation, your company, and your data.
So, before you click "Save to Tableau Public", ask yourself:“Is this data safe to be completely open to the world?”If the answer is no, don’t publish it.
