Why trading records are sensitive
A trading journal contains your account balance, asset size, and trading patterns as-is. If that information sits on an external server, a server breach or a change in the company’s policy alone is enough to expose personal financial information.
The risks of server-based storage
- If the service shuts down, you may lose access to everything you’ve logged
- A single server breach can leak many users’ financial information at once
- The possibility that the operator uses the data for advertising or other purposes can’t be fully ruled out
The advantage of local-only storage
Using only the browser’s local storage (IndexedDB) means the data is never transmitted anywhere in the first place. With no server, the risk of a server breach simply doesn’t exist, and even if the service goes offline, whatever’s already stored stays right there in your browser.
The trade-off of local storage
There’s a downside too — you can’t view the same records on a different device or browser, and clearing browser data erases the records along with it. That’s exactly why, with local-only storage, building the habit of regularly backing up a file via Export matters even more.
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