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+# CS 53 Portfolio Guidelines
+
+The CS 53 cybersecurity portfolio is a curated collection of work that demonstrates your technical skills and your ability to explain what you learned.
+
+Each lab portfolio entry should contain only the materials needed to demonstrate your work, such as:
+
+- A concise explanation of the activity
+- Selected commands or code
+- Sanitized screenshots or diagrams
+- Results and observations
+- A short "What I Learned" reflection
+
+Do not treat your portfolio as a backup of your entire lab environment. Before committing files, review them and remove sensitive, personal, temporary, or unnecessary information.
+
+Keep your CS 53 portfolio repository private while completing the course. Making portfolio work public should happen only after a deliberate review.
+
+# CS 53 Portfolio Security Checklist
+
+Before committing or pushing portfolio material, verify that it does not contain:
+
+- Passwords
+- API keys
+- Access tokens
+- Session tokens
+- Authentication cookies
+- Private keys
+- Personal information
+- Unreviewed private IP addresses or network information
+- Unsanitized security logs
+- Temporary grader or submission files
+
+If you are uncertain whether something is safe to include, do not add it to the portfolio.
+
+Before making any portfolio work public, review it carefully and remove or sanitize anything that should not be shared.