Apple has released an update to GarageBand that fixes a design flaw that could compromise your Internet security and privacy settings.
Here's how Apple describes the problem:
When GarageBand is opened, Safari’s preferences are changed to always accept cookies. The default preference is to accept cookies only for the sites being visited. The altered setting may allow third parties and advertisers to track a user’s web activity. This update addresses the issue by not changing the preference setting. Users who have run previous versions of GarageBand should confirm that their Safari preferences are set as desired.
To apply the fix: