Weknow.ac is malicious software. its a fake search engine that could affect your macOS. It may look innocent but we know.ac records your activity without your permission This is probably installed via a Adobe Flash update. This is How to fix weknow.ac in Google Chrome.
There are a couple of ways you can make sure that this is removed from your computer. Follow the steps below to make sure of it.
How to fix weknow.ac in Google Chrome
Open System Preferences from the Apple icon.
Look for any profiles in the name of InfoSearch or Weknow. Delete all of them.
As you can see in the image above, it says unsigned in red letters. It means that these profiles are not apple certified.
After deleting this, Relaunch Google Chrome and go to search engine option in Settings and remove WeKnow from the list.
Go to Library
Open Finder. Press Cmd + Shift + G. Type /Library/LaunchAgents
Click Go. In the Library Folder that appears, look for any file with the name weknow. Delete it as well. This will fix most of the troubles.
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