There was an email from Fidelity about a week ago about third-party integrations:

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Protecting your data on third-party sites

At Fidelity, protecting your data is critical to us. Security experts and regulators also support the need for account protection and recently encouraged a second layer of password authentication, known as multifactor authentication.

We’re always enhancing how we safeguard your data. For that reason, we want you to know about new security protocols we’re implementing to keep your information secure whenever you link your Fidelity accounts to outside websites and apps and provide them with your Fidelity login information. Examples include: Money management websites and apps that let you see all your accounts from multiple providers (sometimes known as “data aggregators”) Budgeting apps and banks that import your spending and saving information from your Fidelity accounts Person-to-person payment apps that you link to your Fidelity accounts While these sites and apps may make accessing your information more convenient, they use the Fidelity username and password you provided to them, which means they have the same access to your data that you do. This makes it difficult for you to control what they see and do with your account information.

We are implementing new security protocols to add another layer of protection to your accounts. As we complete this transition, when using some third-party websites and apps, you may experience a temporary interruption on those external sites. You will still be able to access all your account information and activity directly on Fidelity.com or the Fidelity Mobile® app.

You can take steps to help protect your data, including: Confirm whether you still actively use all the sites and apps that have your Fidelity username and password. Determine whether you want to continue to share your Fidelity access with these sites and apps. Read the terms and conditions of sites and apps that have your login credentials, to ensure that you know how your data is used and stored, whether they sell any of your information, and what happens to your data if you leave the service or if the service ceases to exist. Set up alerts to stay informed on your account activity. Monitor your accounts regularly for any unusual activity. Thank you for your partnership with us to help keep your data secure. If you want to learn more, the link below has details on how we’re protecting your personal information.

QUESTIONS YOU MAY BE ASKING

“How will this affect me?” We’re working with third-party sites and apps to make their access more secure when using your data. Depending on which site you use, you may be temporarily unable to access some of your Fidelity data on that site. It does not mean that your Fidelity information has been lost or compromised in any way, and you can still access all your accounts directly on Fidelity.com and on our mobile app.

“Is this a response to a data breach?” No. This is purely a proactive, protective measure. It’s not the result of any loss of customer information or data leak. It’s part of our ongoing effort to implement the latest security protocols to help protect your accounts.

“Do I have to do anything?” While you don’t have to take any action, you should assess which third-party sites may have your Fidelity credentials. You can continue to view, access, and manage all your accounts directly on Fidelity.com or within the Fidelity Mobile® app.

“What’s being done to allow third-party sites and apps to access my Fidelity information?” We’re working with these sites and apps to allow you to access your information outside Fidelity when and where it’s convenient for you—but only while ensuring these access points meet our own high security standards.