Did you type in the password on that lady's laptop or did you let is auto-fill somehow ?

If you typed the password then a password update should prevent future access, but if you did this the day then she would have had enough time to read the mails. Did you notice that mails that you hadn't read yet were marked as read indicating that someone else had read them?

Note that you should never login to Sync on a computer that isn't your own as that causes all your personal data to get downloaded to that device.

Dear Sir Thank you for your reply. I was typed in my pass word on that day. may I ask what is pass word update? It was what I am worried, on that day It certainly that lady with other people in office have enough time to read through all my inbox emails because it was quite a while before came back to me. I can only blame my self so stupid. I will keep an eye to check if my incoming new email have been read before myself. I thank you for taking time to reply and explained. Louise

Quote: may I ask what is pass word update?

That is about changing the password for the Yahoo website in case it is compromised to prevent someone else to login with the old password.

Dear Sir First of all thank you for your reply. I have 2 questions to asking if I may. 1: You mentioned that a pass word update. - is that means when I changed my password it is update ? 2: You mentioned in your first reply about..... login to sync This is the hard part as I am not entirely understand it. What is sync ? do I need it ? to have sync or don't have it - what is different ? In the Firefox it seems that I have sync..- is it better to leave as it is, or should I turn it off - and how to do it? please help. Kind regards. Louise

Louise,

Let me try to help. As I understand the situation,

1. You used another person's laptop to login to your Yahoo mail. 2. When you entered your Yahoo password, that person's browser asked, "Save login for [this website]?" 3. In response to that question, you clicked the "X" in the top right corner of ... [the Save Password prompt or the Yahoo Mail browser tab?]. 4. Later, worried they had access to your email, you changed your Yahoo password.

Based on that understanding...

The Bad News: It is possible, of course, that the lady and her colleagues were looking through all your emails when she took her laptop in the other room. When you said you clicked the "X," I think you mean you closed the Save Login prompt (which is good), but even if what you mean is that you clicked the "X" to close the browser tab, they could still click History menu > Recently Closed Tabs [or Windows] > and select the Yahoo Mail tab you just closed to reopen it ... without needing your password. That would be possible if you did not click to Log Out of Yahoo before she took the computer.

The Good News: Your password would only be saved on that person's browser if you clicked "Save" when prompted with the "Save Login" question. As I said, it sounds like this is where you clicked "X," although I don't have an "X" on my prompt [see screenshot]. If you did not agree for the password/login to be saved, then she would only have access to your email until she closed the browser (if they have it set to clear history when closed) or when she logged out of your email herself.

You were very smart to change your password, and I cannot think of any way that your new password would ever be updated on their computer (unless you Synced your computers) ... or for them to have access to it (unless you did agree for the browser to save your login and you also had to login to your associated recovery email address while on her laptop (to be reminded of your Yahoo mail password) and you saved that email login in her browser, too – if she's savvy she could probably get your new passwords in this case).

But you did not mention any of that happened, so I assume it did not, and in that case, the first time they logged out of your Yahoo mail (either by choosing to log out or closing the browser – if their settings are to clear history ... or is it clear cache? ... or clear cookies? hmmm, not sure) – AFTER you changed the password – then all your fears are over.

A couple more things, to help put your mind at ease.

First, when Cor-El said:

"If you typed the password [rather than use auto-fill [which I'm quite sure from your story you did not]], then a password update should prevent future access..."

what they meant was:

"Assuming you typed the password yourself and it was not pre-populated by auto-fill (which would indicate you had entered your password and saved it on her computer on a previous occasion), then when you changed your password later, that should prevent them from being able to access your email in the future."

So yes, "a password update" = you changing your password.

Second, when they asked if you noticed if some of your emails were no longer "unopened," this meant: one sign that you could look for to be sure that they did read your other emails would be if you noticed that emails that had been unopened before were now no longer unopened. I think Yahoo is like Gmail in that unopened emails are in bold and opened are not.

While this offers a good way to know if they looked at emails without your permission, the truth is, Yahoo has a way to "Show Email As Unread" (people use this to remind themselves to look at an email again later), so it is not a foolproof test. They can open, read, then click "Show as Unread," and you would never know. But if you ever do see emails opened that you know you never looked at before, that is a guarantee that someone else has been in your email ... unless you just forgot opening it.

Finally, sync. Mentioned earlier, this is useful if you want multiple devices to remember all the same things, so you don't have to teach all of them every single thing you want them to remember. If synced, when you teach your computer a new login, your phone will remember it, too, and vice versa.

They were just saying to be sure to never agree to Sync while on someone else's computer. If you do, then that computer (and that computer's owner) will have access to all your history and saved logins and things like that. Then, even when you update your Yahoo email password to try to block someone, if you tell your browser to save/update that login info, the other person's computer would save it, too!

OK, I hope this helps.

Dear Sir

First of all thank you for your email. After I have changed my yahoo mail password it seems that my inbox mails are alright - (not been opened before I read it ). I have an issue about Sync I recently clear yahoo mail's cache and cookie in my smart phone...then in Firefox settings showing Reconnect to resume synchronising  ? - not understand it and not sure either, so I have not taken action and do nothing. As I am concerned my mail box's password will be disclosed to someone, or anyone I would rather not to synchronizing my password or any other account to be synchronizing. Do I have to synchronizing? and what is really the synchronizing means? In my computer, in Firefox account the Sync in ON - do I need it ON? As I am not complete understand it, I managed to turned off my yahoo mail password and enter it by manual every time when I log in to it. This is in case someone else could just easy to log in. Can I turn off Sync ? and How to do it? if I do turn off Sync what would happen? In my smart phone Firefox told me to reconnect to resume sync, why is it? do I Need to ? English is my second language and some times it does made me feel frustrated. So help me with easy comprehends way. Please. Thank you Regards Louise

Dear Sir After I sent out my last post I went to Firefox account's settings to check the Sync Setting and at this time it shows with computer, smart phone, and tablet pictures. It made clear sense that what should I do. My apologies for my last post question. I thank you again for your post and time. Regards. Louise