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.

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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.)

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/

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 can I remove spyware and malware from my mac ?

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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
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How can I remove viruses off my computer? I have mac OS X, but I clicked on a website on google and it didn't open. Instead the security program popped up and said that my computer is at risk of a crash and has detected several viruses!?!?! AAAAHHH!?!?!

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MnM
It's probably the MacDefender scareware trojan horse. If you have this here is how to remove it.
1. Open Activity Monitor look for MacDefender process double click on it and hit quit or force quit.
2. Go to System Preferences, Go to accounts, Go to login items look for anything related to MacDefender hightlight it by clcking on it once. Then hit the minus sign to remove it.
3. Go to applications folder and drag MacDefender to the trash.
4. Open finder and do a search for Macdefender and remove anything you see related to MacDefender.
5. Open Spotlight (the little magnyfing glass in the menubar far right corner) and do a search for MacDefender.
6. Restart your computer and empty trash.
7. If you feel you need to have virus protection for your Mac use ClamXav. It's the recommended AV program for MacOSX. Hope this helps.
Joseph

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http://www.google.com/support/mobile/bin/answer.py?answer=138740
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help me to reslove this issue.
Regards.
jay

Hi,
While populating the field catlog do the following thing to   avoid zeros.
wa_fieldcat-tabname = 'I_OUTPUT'.    " Curr
wa_fieldcat-fieldname = 'FWAER'.
wa_fieldcat-seltext_l = text-023.
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APPEND wa_fieldcat TO i_fieldcat.
CLEAR wa_fieldcat.
Thanks,
Khushbu.

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Here is one logic:
data text type string.
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write text.
Check out this link too:
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How can we remove the key from the dataset which has json

uid
id
Json
4588
51
{ "key": "1/0/234", "element1":{ "a":10 "b": "test1" } }
4589
52
{ "key": "1/0/234", "element1":{ "a":10 "b": "test1" } }
4590
53
{ "key": "1/0/234", "element1":{ "a":10 "b": "test1" } }
I have the above dataset resulting from merge operation .
UID -Integer data type
ID- Integer data type
Json- String data type holding json document
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uid
id
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4588
51
{ "element1":{ "a":10 "b": "test1" } }
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52
{ "element1":{ "a":10 "b": "test1" } }
4590
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Mudassar

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Olaf Helper
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Venkat.

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How can I remove a trojan?

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