Last reviewed August 2026
QUICK ANSWER
Yes, Open Banking is safe. Your bank login details are never shared with anyone. Instead, a secure one-time token is used for each connection. Open Banking is regulated by the Financial Conduct Authority, uses bank-grade encryption, and requires multi-step authentication. You stay in control and can disconnect at any time through your bank.
What actually happens when you connect Open Banking?
When you opt in, your bank does not hand over your username or password to anyone. Instead, it generates a secure, one-time token, which is a single-use digital key that only works for that specific connection. Once used, it cannot be reused. NestEgg, your credit union, and any other third party never see or store your login details.
The connection gives the lender a read-only view of your recent transactions - typically up to 12 months. They can see income and spending but cannot move money, make payments, or access anything outside what you've agreed to share.
Many people assume that connecting Open Banking means sharing their banking password. It doesn't. Your credentials stay with your bank. The token system means no one in the process ever has access to your login details.
How Open Banking keeps your data secure
Your login details are never shared
Your bank sends a one-time encrypted token to the Open Banking service - not your username or password. That token only works for that single connection and cannot be reused. Your login details stay private and are not seen or stored by NestEgg, your credit union, or any other party.
Strong Customer Authentication
Before any connection is made, you're required to verify your identity through multiple steps i.e. a password, a code sent to your phone, or biometric data such as a fingerprint. This is the same authentication you use to log into your own bank, and it ensures only you can authorise a connection.
Bank-grade encryption
All data shared through Open Banking is encrypted — scrambled into a secure format that only authorised parties can read. This protects your data even in the unlikely event of interception.
FCA regulation and independent audits
Open Banking in the UK is overseen by the Financial Conduct Authority (FCA). Only FCA-authorised providers can participate, and all must meet strict data and security standards. Providers are subject to regular compliance checks by both the FCA and the Open Banking Implementation Entity.
You stay in control
You choose whether to connect, what account to share, and for how long. You can withdraw consent at any time directly through your bank's app or online banking. No need to contact NestEgg or the credit union.
Staying vigilant from phishing risks
Open Banking itself is secure, but phishing attempts (where fraudsters impersonate trusted organisations) are a general online risk. Here's how to protect yourself:
- Only share data with FCA-authorised providers. Verify their status on the FCA register
- Be cautious of emails or texts asking you to connect Open Banking outside of an official application process
- Check web addresses carefully. Scammers use characters that look similar to real letters, such as "ɑ" instead of "a"
- Keep antivirus software up to date and use strong, unique passwords
Ready to find an affordable loan through NestEgg's comparison platform?
Compare credit unions you may be eligible for.
Common questions about Open Banking safety and security
Boost your chances of getting an affordable loan
Enter your email to get tips once or twice a month
No spam. Unsubscribe anytime.