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I started to use LastPass a few months ago and imported passwords from my browsers.

Apparently, Google Chrome and Opera (based on Chromium) still pop-up the option to store passwords in my browser and probably simultaneously trying to fill in forms automatically.

Recently a conflict occurred on a site while logging in. I think passwords were changed and there was a different password stored in the browser then in LastPass. The auto-fill was not working correctly and maybe both tried to auto-fill the form.

I guess it might make sense to disable browser password storage and browser auto-fill to avoid this conflict. I'd like to be sure about:

  1. What is exactly happening?
  2. What are the pros & cons of having both?
  3. What is recommended to do?
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    Clear your browsers, deactivate saving passwords option on them, delete related profiles to the websites that cause you trouble and then create new ones on LastPass. – user45139 Oct 1 '15 at 8:09
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What's happening

Both the built-in and Lastpass password managers are trying to auto fill/auto login and probably the built-in password manager gets precedence over Lastpass.

Pros and cons
Pros:
Your passwords are stored redundantly.

Cons:
Multiple popups to save /override passwords/login when saving new login data.
More efforts in terms of manageability.

Recommendations

  • Turn off built-in password manager/lastpass (either via browser settings or use the option from Lastpass's settings.

Lastpass allows saving the cross browser& cross platform login info in cloud, so you can access it from any* device using your credentials. I suggest you use it.

*some device features are available only in premium and enterprise versions. Eg: mobile addons.

  • Kind of what I was thinking as well. – Alex S Oct 2 '15 at 11:46
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You definitely don't want to allow this to continue. However small the risk may be, there is some non-zero risk of every stored copy of your passwords being exposed. So there's just no reason to be in the situation that a successful attack on LastPass or Chrome stored passwords will expose your passwords.

BTW, if you've not set a Chrome sync passphrase, then your passwords synced to Chrome can be read by Google. I'm not saying that they do read them or even that they store them in clear-text. Just that they have all the keys for decryption.

  • What are you talking about? I have a Sync Phrase set up. That is not my concern. My concern is parallel use of both versus using only one, say LastPass. – Alex S Oct 2 '15 at 11:44

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