my mac has a virus

When you install FileZilla there's a little checkbox that you must have missed. They really like pushing Yahoo. It's not a virus, per se. It's just annoying.

 

Run MalwareBytes for Mac. It'll take about a minute and should resolve the problem: https://www.malwarebytes.com/mac-download/

Let me know if there's still an issue by quoting this post.

 

It's not a virus.
Do what the others wrote.

 

Your Mac doesn't have a virus, as there are none in the wild that run on OS X.

 

So from the start, you tell us that you don't have a virus, you don't even suspect you have a virus. So could you please change the thread title?

 

Not reading and unchecking a box from internet app installation is certainly how to destroy your Mac. By definition it would not be a virus, as it cannot self replicate within the *nix architecture.

Read the small print when installing stuff, or instead of being annoying it could pass all of your keystrokes to a foreign party. Checking on your bank balance, logging into iTunes, ect could prove quite expensive in the worst case or just permanently destroy your computer in the best case.

 

Hi,

you did not need to do this.

The actual "helpful answer" was in post #3 : the "thing" that installed yahoo search as default engine is an adware/malware.

What you needed to do is exactly this :

1. install and run MalwareBytes to get rid of your malware(s)

2. go to the browser(s) Preferences to set back your default engine to what you want

--- Post Merged, Mar 29, 2017 ---

And remember this : your crapwares are installed at root level.

So, if you don't remove them now, they will continue their "work" in your new account...

 

My mistake for the poor wording. I should have added can be destroyed. Script kiddies will package load destructive code into 'freebie' apps. It is this reason we like *nix ( mac / ubuntu ) operating systems and the security of the Apple Store. Prevents us from making silly mistakes and having to worry about silly people, for the most part.

Still requires a little bit of a sanity check on our part as users, but far safer than the wild west.

Most of the 'bad' stuff that can be added to a mac can be cleaned off with Malwarebytes. Be sure to get it from a safe location as those same bad people repackage MalwareBytes with keyloggers inside.

For example
Do not download from a mirror site like this one:
http://ccm.net/download/download-105-malwarebytes-anti-malware

Download from the main site:
https://www.malwarebytes.com/

PS. Be careful the bad guys often buy up the top level domains and spam malware out. For example, malwarebytes.co or malwarebytes.us or malwarebytes.net could be purchased by you for as little as $6.88US. You could then create a very similar front page and catch quite a few people into downloading spamware software to their computers.

 

And yet you continue. There are plenty of correct answers, yet you pick the one that requires you to wear a tin foil hat. Good job.

 

To edit the thread title, click the gear icon at the top of this thread. It's above the first post, to the right, beside "Most Liked Posts". On the dropdown list you will see "Edit Title".

 

So no malware, you've just picked Yahoo as your default search engine.

On chrome:
Click Chrome > Preferences > Search > Google

 

It's a Search.yahoo.com browser hijacker. Some sites distribute these browser hijackers using a deceptive software marketing method called 'bundling' - a method that allows installation of third-party apps together with other software.

What you have to do:
1. Uninstall all the recently installed, suspicious, unknown to you extensions/add-ons in your browsers. (Like: "Amazon Shopping Assistant by Spigot", "Domain Error Assistant", "Ebay Shopping Assistant by Spigot" and "Slick Savings").
2. Reset the search engine in your browsers to Google and your homepage back to your preferred one.
3. Download and install EasyFind to look for leftovers (optional).

Good luck.

 

Sossity, have you done all the steps in my post? It is important to uninstall all the suspicious extensions from all your browsers.
Please try with the name of the browser extensions that you have uninstalled.

 

And your browsers are not redirected anymore?

 

Ok, then.
Nevertheless run Malwarebytes one more time (update before doing it).

 

macOS as well as Windows aren't immune to the user not reading stuff carefully while installing software. It's not the OS's fault.

 

You are welcome.