Stop sharing sensitive data with AI tools. Auto-masks API keys, passwords & personal info in ChatGPT, Claude & Gemini. Free.
Users
3
โ1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#306K
#247K among extensions
Version
1.2.2
updated 16 Jun 2026
Users
monthly, 4 months
Latest, 15 Oct 2026:3 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Shield: AI Privacy for ChatGPT & Claude
๐ก๏ธ INFINIUM SHIELD โ AI PRIVACY FIREWALL
Every message you send to ChatGPT, Claude, or Gemini passes through their servers โ and stays there. Shield intercepts your prompts before they leave your browser, replaces sensitive data with safe tokens, and swaps them back in the AI's response. You get the same answer. The AI never sees your real data.
Works automatically. Zero configuration. No account required.
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WHAT SHIELD PROTECTS
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Shield automatically detects and masks 19 categories of sensitive data:
๐ด CRITICAL
โข API keys โ AWS, OpenAI, Anthropic, GitHub, Slack and generic api:/token:/bearer: patterns
โข Passwords โ all common password field formats
โข Database connection strings โ PostgreSQL, MySQL, MongoDB, Redis and more
โข JWT tokens
โข Private keys โ RSA, EC, OpenSSH, PGP
โข Secret environment variables
๐ก WARNING
โข Email addresses
โข Phone numbers
โข Credit card numbers
โข Private IP addresses (RFC 1918)
โข Social Security Numbers (SSN)
๐ข INFO
โข URLs containing embedded credentials
โข Internal hostnames (*.internal, *.corp, *.local)
โข System file paths
โข Personal names
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HOW IT WORKS
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1. You type a message in ChatGPT, Claude, or Gemini
2. You press Enter or click Send
3. Shield intercepts the prompt in milliseconds
4. Sensitive values are replaced with tokens: [EMAIL_1], [API_KEY_1], [PASSWORD_1]
5. The clean prompt is sent to the AI
6. When the AI responds, tokens are swapped back to real values
7. You read natural, accurate text โ your data was never exposed
The entire process is invisible. You work exactly as you normally would.
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PRIVACY GUARANTEE
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Shield is built on a single principle: your data never leaves your device without your knowledge.
FREE TIER โ 100% LOCAL
โข All processing happens inside your browser
โข Zero data sent to any server โ ever
โข No account required, no registration, no email
โข No analytics, no telemetry, no tracking
โข Works fully offline
PRO TIER โ METADATA ONLY
โข Your actual prompt content is still never transmitted
โข The audit log records only: which AI tool, how many items were masked, what categories
โข Real values are never logged, never sent, never stored on our servers
โข Custom rules are synced as plain text terms โ no prompt content, ever
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GDPR & COMPLIANCE
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For organisations under GDPR, HIPAA, SOC 2, or ISO 27001, sharing personal data with AI providers without safeguards creates significant compliance risk. Shield ensures personal data is masked before transmission, enforcing data minimisation by architecture, not policy.
GDPR โ Masks personal data before it reaches third-party AI processors.
HIPAA โ Reduces PHI exposure for healthcare organisations using AI tools.
SOC 2 โ Provides a measurable technical control for AI data confidentiality risks.
ISO 27001 โ Auditable control for the emerging AI tool risk category.
Note: Shield is a technical control, not a compliance certification. Always consult your legal and compliance teams.
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SUPPORTED AI PLATFORMS
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โ ChatGPT (chatgpt.com + chat.openai.com)
โ Claude (claude.ai)
โ Gemini (gemini.google.com)
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FREE vs PRO
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FREE โ Forever, no account needed
โ All 19 built-in detection rules
โ Automatic interception on ChatGPT, Claude & Gemini
โ Token swap in AI responses
โ Popup showing what was masked
โ Per-site and global on/off toggle
โ 100% local โ nothing sent anywhere
PRO โ $8/month via infinium.tools
โ Everything in Free
โ Custom rules โ protect project names, client names, internal codenames
โ Sync custom rules across all your browsers and devices
โ Advanced detection โ .env files, cloud credentials, Stripe keys, code secrets
โ Full audit log โ what was masked, when, on which AI tool
โ Priority support
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A REAL EXAMPLE
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Without Shield, pasting this into ChatGPT:
"DB: postgres://admin:S3cr3tPass@db.internal:5432/prod
Token: eyJhbGciOiJIUzI1NiJ9.eyJ1c2VyIjoiam9obn0.abc123
Contact: john.smith@acme-corp.com"
...sends your database password, JWT token and email directly to OpenAI's servers.
With Shield, the same message becomes:
"DB: [DB_CONN_1]
Token: [JWT_1]
Contact: [EMAIL_1]"
The AI gives exactly the same help. Your data never left your browser.
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PERFECT FOR
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๐จโ๐ป Developers โ Stop sharing API keys and DB passwords when asking AI for code help
๐ข Companies โ Protect client names, project codenames and internal data
โ๏ธ Legal Teams โ Reduce GDPR exposure when staff use AI for document review
๐ฅ Healthcare โ Prevent inadvertent sharing of patient-related information
๐ Security Teams โ Enforce data hygiene across AI tool usage
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WHAT SHIELD DOES NOT DO
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โ Does not encrypt prompts โ it masks them
โ Does not protect file uploads or attachments
โ Does not work on AI tools outside the supported platforms
โ Does not guarantee 100% detection โ novel formats may be missed
โ Is not a substitute for a full data protection programme
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PERMISSIONS EXPLAINED
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โข storage โ Save settings and statistics locally
โข tabs โ Detect which AI site is open for popup display
โข alarms โ Pro only: daily rule sync in background
Shield does NOT access browsing history, bookmarks, clipboard, or any data unrelated to supported AI sites.
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ENTERPRISE DEPLOYMENT
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IT administrators can force-install Shield on managed Chrome profilโฆ