The Advanced Spellchecker in Chrome and Edge Saves Everything You Type—Even Passwords - Lifehacker
Google Chrome and Microsoft Edge both come with advanced spellcheck tools: But because they are advanced (they help you with more than just spellcheck), all the processing for the grammar and language suggestions happens on their servers.
According to a study by Otto, these services are transferring basically anything you write, in plain text, to Google or Microsoft servers—including passwords revealed when you click the “Show Password” button, as this video demonstrates:.
However, if you are using Chrome’s Enhanced Spell Check feature, or the Microsoft Editor in Edge, you need to disable them right away.
Until Microsoft and Google update their products with a basic level of text encryption technology, we suggest you stay away from these advanced spellcheck or grammar tools