AI's blind spot
AI writing tools do not distinguish between draft text and sensitive data. They process and may store everything you paste, including card numbers and IDs.
Source: Silver AI website
Silver AI
Practical and Safe AI for Older Adults
Practical AI guidance for older adults, families, and caregivers.
When Writing to the Bank, Keep Your Details Out of the AI Chat
Who's at risk
Anyone who uses AI writing tools for financial, legal, or official correspondence.
What's at stake
Your bank card number, government ID, home address, and phone number exposed in an AI conversation you cannot fully delete.
AI tools are great at helping you write clear emails and letters. But when you paste your full bank card number, ID number, phone number, and home address into an AI chat to "fill in the blanks," you are handing sensitive personal information to a tool that may store, log, or share it in ways you cannot control. This page helps you recognize what counts as too much information and how to get writing help without putting yourself at risk.
Takeaway
Let AI help you write the letter, but fill in your personal details yourself after copying the draft.
What You Should Never Paste into an AI Chat
Watch for these patterns before you hit send in any AI writing tool.
Full Bank Card Numbers
Your 16-digit card number, expiry date, and CVV together are enough for someone to make purchases. AI chat tools are not secure filing cabinets. If you would not write your card number on a postcard, do not paste it into an AI prompt.
National ID or Identity Numbers
Your ID number is a master key to your identity. Combined with your name and date of birth, it can be used to open accounts or file claims in your name. AI tools do not need this information to write a good letter.
Passwords, PINs, and One-Time Codes
Some users paste login details so the AI can "access my account and check." This gives the AI tool full access to your account and stores your credentials in a conversation you may not be able to fully delete.
Full Name with Address and Phone Number
A complete name-plus-address-plus-phone combination is exactly what identity thieves look for. AI tools can write a letter using placeholder text like [your name] and [your account number] instead of real data.
Copy-Pasting Entire Bank Statements
Attaching or pasting a full bank statement gives the AI tool your transaction history, balances, and account details all at once. It also means that data exists in a conversation log you may not fully control.
Safe vs. Risky
How to Ask AI for Writing Help
Example 1: Asking AI to Write a Dispute Letter
DANGER
From: You → AI Chat
Write a dispute letter to Example Bank. My card number is 6225 8888 1234 5678, my ID is 310101199003150012, my phone is 13912345678, and my branch is at 456 Nanjing Road. I was charged $89.99 I did not authorize.
TRUSTED
From: You → AI Chat
Write a dispute letter to my bank about an unauthorized charge of $89.99. Use placeholders like [card last 4 digits], [my full name], and [branch address] where my real details should go. I will fill those in myself before sending.
- Full card number, ID number, phone, and branch address are all exposed in one prompt.
- AI conversation logs may be stored, reviewed, or used for training depending on the tool's policy.
- If this conversation is ever leaked or accessed, the user's entire financial identity is compromised.
- No real personal information is shared with the AI tool.
- Placeholders let the AI generate a well-structured letter without needing your data.
- You stay in control of where your real details go and who sees them.
Example 2: Asking AI to Help with a Phone Dispute Script
DANGER
From: You → AI Chat
I need a phone script to dispute a charge. My bank is Example Bank, my account number is 6225888812345678, my online banking login is [email protected] and my password is Myp@ss2024. Help me figure out what to say.
TRUSTED
From: You → AI Chat
Help me write a phone script for disputing an unauthorized charge on my bank card. I want to sound calm and clear, and I want to ask the representative to reverse the charge and confirm by email. Do not include any real account details.
- Login email and password are shared in plain text with the AI tool.
- Account numbers are exposed alongside credentials, giving anyone who sees this conversation full account access.
- AI tools are not designed to be secure password managers or private vaults.
- The request focuses on the structure and tone of the script, not on personal data.
- No sensitive information is included that could be misused if the conversation were exposed.
- The AI-specific habit here is treating AI output as a draft template, not as a form that needs your real data filled in on the AI side.
Example 3: Sharing Sensitive Documents for "Better Results"
DANGER
From: You → AI Chat
Here is a screenshot of my bank statement from last month. Can you check which charges look wrong and draft a complaint email? [Attaches image of full bank statement with name, account number, address, and all transactions visible]
TRUSTED
From: You → AI Chat
I have a bank statement with about 12 charges. Three of them look unfamiliar: $14.99 from VENDOR-A, $89.99 from VENDOR-B, and $3.50 from VENDOR-C. Can you help me draft an email asking the bank to investigate these three charges?
- A full bank statement contains your name, account number, address, and every transaction in one image.
- Once uploaded, you may not be able to fully remove it from the AI tool's servers.
- AI image processing may store and analyze the document even after your session ends.
- Only the specific charges in question are described, with generic vendor names.
- No account numbers, addresses, or personal identifiers are included.
- The AI can still write a useful and specific email without seeing the original document.
Safety & Verification Checklist
Use Placeholders Instead of Real Data: Before you ask an AI tool to write a letter, email, or form, replace every sensitive detail with a placeholder like [my name], [card last 4 digits], or [branch address]. Fill in the real information yourself in a separate document after the AI generates the draft.
Check What Your AI Tool Stores: Open your AI tool's settings or privacy page and check whether conversation history is saved, used for training, or accessible to others. Turn off history saving if the option is available, especially for conversations that involve personal topics.
Never Share Login Credentials with AI: No AI writing tool needs your password, PIN, or online banking login to help you write a letter. If you catch yourself about to paste a password, stop and delete it from the prompt. Use the AI output as a starting draft only.
Review and Redact Before Sending: After you fill in your real details in the draft letter, read it once more before sending. Make sure you are sending it only to the official bank address or portal, and that the letter does not include more personal data than the bank actually needs to process your request.
A Note from Silver AI
AI tools are helpful writing partners, but they are not safe places for your personal information. Keep the help, leave out the details. You can always fill in the real information yourself after the draft is done.