How can I remove Yahoo trojan?

Several time an hour, the screen below pops-up, asking for my Yahoo email password. Once, when I did submit my password, a spam email was immediately sent to all of my friends. I changed my password but can't get rid of this popup. I don't know if it's a trojan or something else, but if someone could help me get rid of this screen, I'd really appreciate it.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of this exercise is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login. Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on some Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem(s)?
After testing, reboot as usual (i.e., not in safe mode.)

Similar Messages

How can I remove a trojan?

As my Mail Application keeps asking for a Password, even though I have just given it, I entered BT Yahoo, which is still working.
There I found about 3,000 failed EMail reports.
All refered to a need to check security and were from a Bank in Qatar.
The latest were very recent.
What can I do to resolve this?
BTW. I have an Intel iMac and System 10.7.2
Many thanks, Tink2.

Download ClamXav here: http://clamxav.com/
Run that, it will find them.

How can I remove Yahoo and replace with Google in my tool bar?

I signed up with "GIMP.com" and it loaded the Yahoo tool bar at the top of my page. I want to return to using Google"s tool bar and delete the Yahoo tool bar.

See this: <br />
http://kb.mozillazine.org/Uninstalling_toolbars

How can I remove the Yahoo icon from my iphone?

How can I remove the Yahoo icon from my iphone?

This is covered in the manual.
iPhone User Guide (For iOS 4.2 and 4.3 Software)
Hold an icon until they all wiggle, then tap the "x" in the corner.

How can i remove the yahoo toolbar on the new firefox

I downloaded firefox 4.0.1 and it automatically installed a yahoo searchengine icon in my toolbar. How can I remove it?

Try this:
Tools > Add-ons > Extensions
and DISABLE or UNINSTALL the Yahoo Toolbar in the list.
Then restart Firefox.

I really would like to know how to totally remove Yahoo toolbar from my Firefox browser as well as my computer. I don't like those special toolbars at all.

I really would like to know how to totally remove Yahoo toolbar from my Firefox browser as well as my computer. I don't like special toolbars at all. I find it irritating that you included one in the newest version of your browser. In the future I would hope you would leave this or any other out. Firefox used to be my favorite browser to use, now I am not going to want to use it because of the extra toolbar. Please tell me there is a way to remove this, not just hide it.

You can't move the Yahoo Toolbar from IE to Firefox, they are totally different "behind the scenes". However you can install it, [http://us.toolbar.yahoo.com/ http://us.toolbar.yahoo.com/] and I believe if you log in with your Yahoo account it will sync your data.

I have iPhone 4s, and using latest iOS. When I try to open any link from Twitter or Facebook, it goes to open some wrong webpage. My iphone seems to be infected or suffering from some spyware or malware. How can I remove this wrong link opening

I have iPhone 4s, and using latest iOS. When I try to open any link from Twitter or Facebook, it goes to open some wrong webpage. My iphone seems to be infected or suffering from some spyware or malware. How can I remove this wrong link opening ? Please help me to resolve...

I think the McAfee suite will do the trick when I pay them a one-time fee of $69 or $179 for a year for unlimited support.
Your call of course but IMO a waste of money. Please read this first:
There are many forms of ‘Malware’ that can affect a computer system, of which ‘a virus’ is but one type, ‘trojans’ another. Using the strict definition of a computer virus, no viruses that can attack OS X have so far been detected 'in the wild', i.e. in anything other than laboratory conditions. The same is not true of other forms of malware, such as Trojans. Whilst it is a fairly safe bet that your Mac has NOT been infected by a virus, it may have another security-related problem, but more likely a technical problem unrelated to any malware threat.
You may find this User Tip on Viruses, Trojan Detection and Removal, as well as general Internet Security and Privacy, useful:
https://discussions.apple.com/docs/DOC-2435
The User Tip (which you are welcome to print out and retain for future reference) seeks to offer guidance on the main security threats and how to avoid them.
More useful information can also be found here:
http://www.reedcorner.net/mmg/

HT4207 how can I remove a specific gmail account from my ipad 4?

How can I remove a specific Gmail account from my ipad 4?

Assuming you are not syncing with iCloud and you mean, syncing with iTunes only...(you can only use one or the other for syncing to prevent duplicates)
iTunes -
- Open iTunes on your Mac. Connect your iPad. Then click on your iPad (either its name or just "iPad"), then click the info tab (right above the photo of an iPad in the middle). From here you can select sync contacts, then sync groups, and select the groups you want and choose Apply/Sync in the bottom left corner.
iCloud -
- With iCloud if you just sign into iCloud in System Preferences and turn on Contacts, it will prompt to merge all of your contacts that are not already syncing with Gmail or Yahoo!, etc. so there really isnt a way to pick and choose as much with that.
- However if you really want to use iCloud and not iTunes, you could import the contacts that you want into iCloud.com, but you would need to export them from your Contacts App on your Mac and then import them into iCloud (VCard / .VCF is the format you want).
* Exporting the contacts from your Mac Contacts Application --> http://mac.tutsplus.com/tutorials/app-training/contacts-101-a-beginners-guide-to -contacts-on-os-x/ (further down the page)
*Importing contacts into iCloud.com - http://support.apple.com/kb/PH3605
**NOTE - Remember if you do the import into iCloud.com method, DO NOT sign into System Preferences > iCloud, and choose to MERGE contacts. If you do this later, all of your contacts will merge with iCloud and you will have duplicates of this group.
I hope this isnt too confusing. Have a good night!

How does one remove yahoo from firefox?

please, how does one remove yahoo & any of its features from firefox?
it conflicts with my ghostery software. if i can not get rid of yahoo, i will have to remove and reinstall firefox. i want to avoid this because it will cause me to lose my bookmarks.
thank you in advance.

Hi gunnermac,
You should take a look at the Knowledge Base article [[How to set the home page]]. Your homepage might have been changed by a particular site. Sites like MSN, Yahoo, etc have been know to ask to become your homepage.
There are steps in that article to reset your homepage preferences to default. I would try that first to clear out any strangeness. If that works, you can try setting your homepage again to your personal preference.
If Yahoo has been set as the default search in the search bar, you should take a look at the Knowledge Base article [[Search bar]].
If the address bar search has been changed as well, you might want to take a look at [[Location bar search]].
If that doesn't work you should look at the article [[Preferences are not saved]].
Finally, your issue may be because you've been hit with some [https://support.mozilla.org/en-US/kb/Is%20my%20Firefox%20problem%20a%20result%20of%20malware?s=malware&r=0&e=sph&as=s#w_how-do-i-get-rid-of-malware Malware].
Hopefully this helps!

I have a Mac Pro and it seems to have a malware. How can I remove it

I have a Mac Pro and seems like it has a malware, adware . How can i remove it. MACkeeper keeps on popping

You installed the "DownLite" trojan, perhaps under a different name. Remove it as follows.
Malware is constantly changing to get around the defenses against it. The instructions in this comment are valid as of now, as far as I know. They won't necessarily be valid in the future. Anyone finding this comment a few days or more after it was posted should look for more recent discussions or start a new one.
Back up all data.
Triple-click anywhere in the line below on this page to select it:
/Library/LaunchAgents/com.vsearch.agent.plist
Right-click or control-click the line and select
          Services ▹ Reveal in Finder (or just Reveal)
from the contextual menu.* A folder should open with an item named "VSearch" selected. Drag the selected item to the Trash. You may be prompted for your administrator login password.
Repeat with each of these lines:
/Library/LaunchDaemons/com.vsearch.daemon.plist
/Library/LaunchDaemons/com.vsearch.helper.plist
/Library/LaunchDaemons/Jack.plist
Restart the computer and empty the Trash. Then delete the following items in the same way:
/Library/Application Support/VSearch
/Library/PrivilegedHelperTools/Jack
/System/Library/Frameworks/VSearch.framework
Some of these items may be absent, in which case you'll get a message that the file can't be found. Skip that item and go on to the next one.
From the Safari menu bar, select
          Safari ▹ Preferences... ▹ Extensions
Uninstall any extensions you don't know you need, including any that have the word "Spigot" in the description. If in doubt, uninstall all extensions. Do the equivalent for the Firefox and Chrome browsers, if you use either of those.
This trojan is distributed on illegal websites that traffic in pirated movies. If you, or anyone else who uses the computer, visit such sites and follow prompts to install software, you can expect much worse to happen in the future.
You may be wondering why you didn't get a warning from Gatekeeper about installing software from an unknown developer, as you should have. The reason is that the DownLite developer has a codesigning certificate issued by Apple, which causes Gatekeeper to give the installer a pass. Apple could revoke the certificate, but as of this writing, has not done so, even though it's aware of the problem. This failure of oversight is inexcusable and has compromised both Gatekeeper and the Developer ID program. You can't rely on Gatekeeper alone to protect you from harmful software.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.

How do I remove Yahoo toolbar from Firefox?

I can't remove the Yahoo toolbar from Firefox

See this article [http://help.yahoo.com/l/us/yahoo/toolbar/toolbar1ff/basics/general-07.html How do I remove Yahoo! Toolbar for Mozilla Firefox?]

How do i remove yahoo from firefox?

I downloaded a screen saver and after installing it I ended up with a Yahoo search page every time I start Firefox.
It is not in my plugins or addons so I can't remove it there.
It is not in my list of installed programs so I can't uninstall it.
I have reinstalled Firefox and it is still there.
How can I remove it?

Hi gunnermac,
You should take a look at the Knowledge Base article [[How to set the home page]]. Your homepage might have been changed by a particular site. Sites like MSN, Yahoo, etc have been know to ask to become your homepage.
There are steps in that article to reset your homepage preferences to default. I would try that first to clear out any strangeness. If that works, you can try setting your homepage again to your personal preference.
If Yahoo has been set as the default search in the search bar, you should take a look at the Knowledge Base article [[Search bar]].
If the address bar search has been changed as well, you might want to take a look at [[Location bar search]].
If that doesn't work you should look at the article [[Preferences are not saved]].
Finally, your issue may be because you've been hit with some [https://support.mozilla.org/en-US/kb/Is%20my%20Firefox%20problem%20a%20result%20of%20malware?s=malware&r=0&e=sph&as=s#w_how-do-i-get-rid-of-malware Malware].
Hopefully this helps!

How do I remove yahoo when I open a new tab?

I want to remove the automatic window to yahoo search engine when I open a new tab. I did not have this before and I do not want it.
How can I remove this intervention?

Yes, extensions (malware Vosteran) was the problem.
Thanks!

How can I stop Yahoo mail from appearing on my iPhone 5 iOS 8.0.2

How can I stop Yahoo mail from appearing on my iPhone 5 iOS 8.0.2

You either remove your Yahoo email address from the device or you turn of the 'Mail' option for that account under Settings > Mail, Contacts, Calendars.

How can I remove spyware and malware from my mac ?

How can I remove rootkit.spyware and Trojan.malware from my mac ?
Since a few days, some webpages open by themselves and it look like the security of my computer is compromised.
I have a Mac OS X 10.9.5
Thanks for your help !

Remove Browser Pop-up Problems
     AdwareMedic
     Adblock Plus 1.8.9
     remove adware that displays pop-up ads and graphics on your Mac

How can I remove Yahoo trojan?

Similar Messages

Maybe you are looking for