Last reviewed: May 15, 2026
AI chatbots can feel like private notebooks, but they are not the same as a locked personal device or an approved internal system. Before you paste a document, code snippet, screenshot, client message, or personal question into DeepSeek, you should understand what kind of data may be collected, stored, retained, shared, or used to improve the service.
This guide explains what not to paste into DeepSeek AI: privacy and security checklist for everyday users, employees, developers, freelancers, students, and small businesses. It is not written to scare you away from AI. It is designed to help you use DeepSeek more safely by knowing which data is low risk, which data must be redacted first, and which data should not be pasted into a cloud AI chatbot by default.
Disclaimer: This is practical privacy and security guidance, not legal advice. For regulated, privileged, or highly sensitive data, consult your employer, security team, lawyer, privacy officer, or relevant professional.
Key Takeaways
- Do not paste passwords, API keys, recovery codes, private keys, or MFA backup codes into DeepSeek.
- Avoid entering sensitive personal data, including government IDs, financial details, medical records, children’s data, and precise location details.
- Treat DeepSeek cloud chats as a third-party data-processing environment, not a private notebook.
- Redact names, account numbers, file paths, internal URLs, client details, secrets, and exact confidential metrics before using AI.
- Use local models or approved enterprise AI tools for sensitive work when your organization requires stricter data control.
Quick Answer
Never paste identifying, confidential, regulated, privileged, or security-sensitive information into DeepSeek AI by default. That includes passwords, access tokens, government IDs, payment details, medical records, confidential work data, client information, private source code, unreleased business plans, children’s data, and legal documents. DeepSeek’s privacy policy says it may collect user inputs, uploaded files, photos, feedback, and chat history, and it says the service is not designed or intended to process sensitive personal data. It also says personal data may be directly collected, processed, and stored in the People’s Republic of China.
Highest-risk items to avoid:
- Passwords and recovery codes
- API keys, access tokens, SSH keys, and secrets
- Government IDs and identity documents
- Bank, payment, and crypto wallet details
- Medical, legal, or HR records
- Confidential company or client data
- Private source code and trade secrets
- Children’s data or student records
- Private addresses, phone numbers, and travel plans
- Unreleased contracts, strategies, launches, or business plans
What Not to Paste Into DeepSeek AI: Privacy and Security Checklist
The safest rule is simple: if the information could harm you, your employer, your client, your customer, your patient, your student, or your organization if exposed, do not paste it into DeepSeek without explicit approval and careful redaction.
This matters because DeepSeek’s own privacy policy says user input may include text input, voice input, prompts, uploaded files, photos, feedback, chat history, and other content provided to its models and services. The policy also lists automatically collected data such as IP address, device identifiers, operating system, device model, system language, logs, and approximate location based on IP address.
DeepSeek also states that its services are not designed or intended to process sensitive personal data, including data related to health, children, precise geolocation, biometric data, citizenship or immigration status, and other sensitive categories.
From a practical security perspective, that means you should think of DeepSeek as a powerful third-party AI tool, not as a confidential vault.
Why This Matters Specifically With DeepSeek
Every AI chatbot has privacy and security considerations, but DeepSeek deserves extra caution because of how its official policy describes data collection, use, retention, and storage.
DeepSeek’s policy says it may use personal data to operate, provide, develop, and improve its services. In its European-region supplemental clause, it also lists a purpose of improving and developing services and training or improving its technology, including machine learning models and algorithms. The same policy says users may have the right to opt out of using personal data for training models or optimizing technologies, depending on where they live and applicable law.
The policy also says personal data may be retained as long as necessary to provide services and for other stated purposes, including legal obligations, legitimate business interests, improving and developing services, enhancing safety and stability, and legal claims. It further states that personal data may be stored outside the user’s country and that DeepSeek directly collects, processes, and stores personal data in the People’s Republic of China.
DeepSeek has also faced regulatory scrutiny. South Korea’s PIPC said DeepSeek temporarily suspended new downloads of its chatbot app on Apple’s App Store and Google Play until necessary updates were implemented. in February 2025 while improving compliance with local privacy law, and Reuters later reported that South Korea’s data protection authority said DeepSeek had transferred user data and prompts without permission when the service first launched there.
Reuters has also reported broader government and regulatory scrutiny of DeepSeek across several countries, including actions or restrictions involving Australia, Germany, India, Italy, South Korea, Taiwan, the Netherlands, and the United States.
The practical takeaway: use DeepSeek for public, generic, or carefully anonymized work. Do not use it as a dumping ground for private documents, secrets, credentials, regulated records, or confidential business information.
The Three-Bucket Rule: Safe, Redact First, Never Paste
| Data Type | Examples | Risk Level | What to Do Instead |
|---|---|---|---|
| Usually safe | Public facts, generic explanations, non-sensitive summaries, general writing ideas | Low | Use normally, but avoid adding unnecessary personal details |
| Redact first | Client names, internal metrics, screenshots, contracts, code snippets, resumes, business drafts | Medium to high | Replace identifiers with placeholders and remove exact sensitive details |
| Never paste by default | Passwords, tokens, IDs, health records, banking data, legal files, HR data, private source code, child data | High | Use an approved secure tool, local model, or professional review process |
OWASP’s guidance on LLM security treats sensitive information disclosure as a major risk category and specifically includes PII, financial details, health records, confidential business data, security credentials, legal documents, and proprietary model or source code information as sensitive examples.
1. Passwords, Recovery Codes, and MFA Backup Codes
Never paste passwords, one-time passcodes, recovery codes, or MFA backup codes into DeepSeek. A chatbot does not need your actual password to help you troubleshoot a login issue.
Bad prompt:
I can’t log in. My password is Summer2026! and my backup code is 1234-5678.Safer prompt:
I can’t log in to an account after enabling MFA. What general troubleshooting steps should I try before contacting support?If you already pasted a password or recovery code, change it immediately and revoke any exposed recovery method.
2. API Keys, Access Tokens, SSH Keys, and Secrets
Developers often paste logs, stack traces, .env files, config files, or code snippets into AI tools. That can accidentally expose API keys, bearer tokens, database credentials, SSH private keys, webhook secrets, OAuth tokens, or cloud access keys.
Never paste:
- sk-… API keys
- AWS, Azure, or Google Cloud credentials
- GitHub, GitLab, or Bitbucket tokens
- SSH private keys
- Database usernames and passwords
- Webhook signing secrets
- Session cookies
- JWTs or bearer tokens
Safer prompt:
I am getting this error in a Node.js API integration: [ERROR MESSAGE WITHOUT TOKENS]. Here is a minimal snippet with credentials removed: [CODE_SNIPPET_WITH_SECRETS_REDACTED]. What could be wrong?If a secret was pasted, rotate it. Do not merely delete the chat and assume the risk is gone.
3. Government IDs and Identity Documents
Do not paste Social Security numbers, passport numbers, national IDs, driver’s license numbers, tax IDs, immigration numbers, or photos of identity documents.
These details can be used for identity theft, account takeover, fraud, and social engineering. DeepSeek’s policy specifically says the service is not designed or intended to process sensitive personal data, and it gives examples that include citizenship, immigration status, children’s data, precise geolocation, genetic data, and biometric data.
Safer prompt:
I’m filling out a government form and don’t understand what this section means. Can you explain the general difference between “taxpayer identification number” and “passport number” without using my actual details?4. Banking, Payment, and Financial Account Details
Do not paste credit card numbers, bank account numbers, routing numbers, invoice details with private identifiers, tax forms, loan applications, payroll data, investment account numbers, or insurance policy numbers.
Also never paste crypto seed phrases, private keys, wallet recovery phrases, or exchange backup codes. If someone has your seed phrase or private key, they may be able to take control of your wallet.
Safer prompt:
I received an invoice with several line items. I removed names, account numbers, invoice IDs, addresses, and payment details. Can you help me categorize the remaining expense types?5. Medical, Health, Biometric, and Highly Sensitive Personal Data
Avoid pasting lab reports, diagnoses, prescriptions, therapy notes, disability records, genetic test results, biometric identifiers, mental health records, or patient files.
You can ask general educational questions, but do not include identifying patient details or private medical records. AI output can also be inaccurate, so it should not replace medical advice from a qualified professional.
Safer prompt:
In general terms, what questions should a patient ask a doctor after receiving an abnormal lab result? Do not diagnose; provide a preparation checklist.6. Legal Documents and Privileged Communications
Do not paste attorney-client communications, lawsuit details, settlement drafts, privileged memos, contract disputes, case numbers, names of parties, or confidential evidence into DeepSeek.
Legal privilege and confidentiality can be complex. A casual AI prompt may create risk if it includes privileged facts, sensitive allegations, personal data, or confidential business terms.
Safer prompt:
I’m reviewing a generic service agreement. What are common clauses a small business should ask a lawyer about before signing?7. Confidential Work Information and Client Data
Do not paste NDA-covered information, customer lists, internal dashboards, sales pipelines, unpublished financials, private strategy documents, security incidents, board materials, or confidential client messages.
This is especially important for freelancers and employees. Even if you personally want faster writing help, your client or employer may have a policy that prohibits entering company data into unapproved AI tools.
Safer prompt:
Rewrite this message in a more professional tone. Replace all identifying details with placeholders: [CLIENT], [PROJECT], [DEADLINE], [BUDGET_RANGE].8. Proprietary Code, Private Repositories, and Trade Secrets
Do not paste unreleased algorithms, private repository contents, security architecture, internal vulnerability details, proprietary workflows, product roadmaps, model weights, or trade secrets.
For debugging, use a minimal reproducible example. Remove secrets, internal URLs, customer data, database names, infrastructure details, and anything covered by confidentiality obligations.
Safer prompt:
Here is a minimal Python example that reproduces the error. I removed credentials, internal paths, and company-specific logic. Why might this function return None?9. HR, Payroll, and Employee Records
Do not paste salaries, performance reviews, disciplinary notes, employee IDs, background checks, manager feedback, medical leave details, hiring evaluations, or termination documents.
HR data often combines personal, financial, legal, and workplace-sensitive information. Even when you need help wording a policy, you rarely need to include real employee details.
Safer prompt:
Draft a neutral performance feedback template for an employee in [ROLE] who missed several deadlines. Do not include personal details or legal conclusions.10. Children’s Data and Student Information
Do not paste children’s names, school names, photos, grades, behavioral notes, medical records, learning plans, addresses, parent contact details, or student IDs.
DeepSeek’s policy says its services are not aimed at children and that it does not knowingly process personal data from children. It also lists children’s personal data among sensitive categories the service is not designed or intended to process.
Safer prompt:
Create a general study plan for a 10-year-old learning fractions. Do not use any student name, school name, diagnosis, grade record, or private family information.11. Personal Addresses, Phone Numbers, Emails, and Travel Plans
Do not paste your home address, personal phone number, private email, exact workplace, family details, travel itinerary, hotel booking, or daily schedule unless there is a clear need and you understand the risk.
These details can support phishing, stalking, burglary, impersonation, or targeted scams when combined with other information.
Safer prompt:
I’m traveling to a large European city for three days. What general safety checklist should I follow for public transport, hotel security, and digital privacy?12. Screenshots, PDFs, Logs, and Files With Hidden Sensitive Details
Users often upload files or screenshots without noticing hidden sensitive information. A screenshot may contain a profile photo, email address, internal URL, customer name, browser tab, account number, analytics ID, or Slack channel. A PDF may include metadata, names, comments, file paths, signatures, or embedded images.
Before uploading a file, inspect it carefully. Remove metadata where appropriate, crop screenshots, blur identifiers, delete internal links, and check every page.
Safer prompt:
I removed names, account numbers, internal links, and confidential details from this screenshot. Please explain the visible error message in general terms.The Redaction Method: How to Make a Prompt Safer
Use this seven-step process before pasting anything into DeepSeek:
- Remove direct identifiers such as names, emails, phone numbers, IDs, and addresses.
- Replace people and companies with roles, such as [CLIENT], [EMPLOYEE], [VENDOR], or [COMPANY].
- Round confidential numbers, such as revenue, salary, headcount, budgets, or conversion rates.
- Remove secrets from code, logs, configs, and screenshots.
- Remove exact dates, account numbers, ticket numbers, URLs, and file paths unless truly necessary.
- Keep only the minimum context needed for the model to answer.
- Use placeholders and ask the model to work with the anonymized structure.
Before:
Rewrite this email to Sarah at Acme Medical Group. Tell her the $428,250 Q2 revenue target is at risk, include my email alex@company.com, and mention that our API key sk_live_123456 failed before the Friday deadline.After:
Rewrite this email in a professional tone. Use placeholders only.
“Hi [CLIENT_CONTACT], the [QUARTER] revenue target of approximately [REDACTED_AMOUNT] may be at risk due to a technical issue. The API credential has been removed: [API_KEY_REDACTED]. Please mention that we are working toward [GENERAL_DEADLINE].”The second version gives the AI enough structure to help without exposing the most sensitive details.
Safe Prompt Templates for DeepSeek
1. Summarizing a Document Safely
I will provide a redacted document excerpt. Names, account numbers, addresses, dates, and confidential terms have been replaced with placeholders. Summarize the main points and list open questions.
Document: [REDACTED_DOCUMENT_EXCERPT]2. Debugging Code Safely
Help debug this minimal code example. I removed all API keys, access tokens, internal URLs, file paths, customer data, and proprietary logic.
Error: [ERROR MESSAGE WITHOUT TOKENS]
Code: [MINIMAL_REPRODUCIBLE_CODE]3. Rewriting a Work Email Safely
Rewrite this email to sound professional and concise. Keep all placeholders unchanged.
Email: “Hi [CLIENT], we are still reviewing [PROJECT]. The blocker is [GENERAL_BLOCKER]. We expect to update you by [GENERAL_TIMEFRAME].”4. Asking About a Contract Safely
Explain the general purpose of this contract clause in plain English. Do not provide legal advice. Names, dates, amounts, and jurisdiction-specific details are removed.
Clause: [REDACTED_CLAUSE]5. Getting Health-Related General Information Safely
Provide general educational information only, not a diagnosis. What questions might someone ask a licensed clinician about [GENERAL_HEALTH_TOPIC]?6. Creating a Policy or Checklist Safely
Create a privacy checklist for employees using AI tools in [GENERAL_INDUSTRY]. Do not reference any real company, client, system, or internal policy. Use practical, non-legal language.DeepSeek Privacy and Security Checklist Before You Paste
Use this checklist every time you are about to paste something into DeepSeek:
- Did I remove passwords, recovery codes, private keys, API keys, and tokens?
- Did I remove personal IDs, passport numbers, tax IDs, and driver’s license details?
- Did I remove health, financial, legal, HR, or education records?
- Did I remove client names, customer data, and confidential work information?
- Did I check screenshots, PDFs, logs, and files for hidden sensitive details?
- Did I remove internal URLs, file paths, ticket numbers, and database names?
- Did I disable model-improvement or training options if available in my region and account settings?
- Did I consider a local model or approved enterprise AI tool for sensitive work?
- Would I be comfortable if this prompt were reviewed by a third-party service provider?
- Is this use allowed under my employer’s, client’s, school’s, or organization’s AI policy?
DeepSeek’s current policy says users can manage chat history in settings and may copy or delete chat history. It also says some users may have a right to opt out of using personal data for training models or optimizing technologies, depending on location and applicable rights.
What to Do If You Already Pasted Sensitive Data Into DeepSeek
If you pasted sensitive information into DeepSeek, act based on the type of data exposed.
- Delete the chat where possible. This may reduce visibility in your account, but do not assume it eliminates every retained or processed copy.
- Change exposed passwords immediately. Also change passwords reused on other accounts.
- Revoke and rotate API keys, tokens, SSH keys, and cloud credentials.
- Notify your employer, client, or security team if work data was exposed.
- Contact your legal, privacy, or compliance team if regulated data was involved.
- Monitor accounts for suspicious activity.
- Review DeepSeek privacy settings and data controls.
- Document what was exposed, when it happened, and what corrective steps you took.
DeepSeek’s policy says it retains personal data as long as necessary for the services and other stated purposes, and it gives examples including legal obligations, legitimate business interests, service improvement, safety and stability, and legal claims.
When DeepSeek May Be Appropriate vs. When to Avoid It
| Use Case | Risk Level | Recommendation |
|---|---|---|
| Brainstorming article ideas, outlines, public topics, study plans, generic explanations | Low | Usually appropriate |
| Rewriting non-sensitive text | Low | Usually appropriate |
| Resume improvement | Medium | Redact phone number, email, address, employer details if not needed |
| Contract explanation | Medium to high | Redact parties, dates, amounts, jurisdiction details, and confidential terms |
| Code debugging | Medium to high | Use minimal snippets and remove all secrets |
| Business analysis | High | Remove client names, internal metrics, strategies, and private financials |
| Medical, legal, HR, or financial records | Very high | Avoid cloud AI unless explicitly approved and legally appropriate |
| Credentials, tokens, private keys, seed phrases | Critical | Never paste |
| Children’s data or student records | Critical | Avoid by default |
| Trade secrets and private repositories | Critical | Use approved secure workflows only |
A local AI model can reduce some cloud-processing risks because prompts may stay on your own machine or controlled infrastructure. However, local use is not automatically safe. You still need device security, access controls, logging controls, malware protection, encryption, and clear rules about who can access the machine and outputs.
FAQ
Is it safe to paste personal information into DeepSeek?
Not by default. Avoid pasting personal information unless it is necessary, low risk, and allowed under your privacy obligations. DeepSeek’s policy says it may collect user inputs and uploaded content, and it says the service is not designed or intended to process sensitive personal data.
Can I paste my resume into DeepSeek?
You can, but redact first. Remove your phone number, email, home address, references, exact employer details, and anything you do not want processed by a third-party AI service. Use placeholders such as [EMAIL], [PHONE], [COMPANY], and [CITY].
Can I paste company documents into DeepSeek?
Only if your company policy allows it and the document has been properly redacted. Do not paste NDA-covered information, customer data, internal strategy, unreleased financials, security details, or confidential client information.
Can developers paste code into DeepSeek?
Developers should paste only minimal, redacted code examples. Remove API keys, tokens, private repository details, customer data, internal URLs, database names, architecture diagrams, and proprietary algorithms.
Does deleting a DeepSeek chat remove all risk?
Not necessarily. Deleting a visible chat may help, but you should not assume it removes every retained, processed, backed-up, or previously transferred copy unless the provider confirms that under the applicable policy and law. DeepSeek’s policy describes retention for service, legal, business, safety, and other stated purposes.
Is DeepSeek local safer than the web or app version?
A local model may reduce cloud exposure because prompts can remain on your own device or infrastructure. But local use still requires strong device security, access controls, updates, encryption, and careful handling of outputs.
Should I use DeepSeek for legal or medical documents?
Avoid pasting private legal or medical documents into cloud DeepSeek by default. For legal or medical matters, use qualified professionals and approved secure systems. If you use AI for general education, remove all identifying and sensitive details.
What is the safest rule before pasting anything?
Ask yourself: Would I be comfortable if this prompt were stored, reviewed, retained, or processed by a third-party service provider? If the answer is no, do not paste it. Redact or use an approved secure alternative.
How is this different from using other AI chatbots?
The core rule applies to all cloud AI chatbots: do not paste secrets or sensitive data by default. The DeepSeek-specific concern is that its policy describes collection of user inputs and uploaded content, model-improvement uses, retention, and direct processing and storage of personal data in China.
Conclusion
The safest way to use DeepSeek is to treat every prompt as information you are giving to a third-party AI service. If the data is identifying, confidential, regulated, privileged, security-sensitive, or commercially valuable, do not paste it into DeepSeek AI by default.
Use public information freely, redact medium-risk material carefully, and avoid pasting credentials, secrets, financial details, medical records, legal files, children’s data, HR records, private code, and trade secrets.
This What Not to Paste Into DeepSeek AI: Privacy and Security Checklist comes down to one practical rule: share the minimum context needed, remove sensitive details first, and use approved secure tools for anything private or high risk.