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uninstall flashback trojan

Among all the confusing posts and scare stories on offer this week about the flashback trojan, a lot of people seem to have missed the instructions for dealing with it.

Here’s F-Secure’s removal procedure:

uninstall trojan downloader

Here’s Rich Mogull’s general advice for securing your mac in light of this new threat:

What you need to know about the flashback trojan

It’s also worth emphasizing that, for technical reasons, if your mac has Microsoft Office 2008 or 2011 or Apple’s XCode installed, this particular trojan will not have been able to infect your computer.

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how to remove ‘Top Sites’ in Safari


If you are fed up with the ‘Top Sites’ feature in Safari 5, here’s how to remove it.

1. In Safari > Preferences > General, change ‘New windows open with’ and ‘New tabs open with’ to either ‘Homepage’ or ‘Empty page’ (as you prefer).



2. In Safari > Preferences > Bookmarks, uncheck ‘Include Top Sites’.





Now you also need to get rid of the caches, and to stop Safari from continually storing images of your web page history (Tip: Safari will still track your History in the normal way, but here we are going to prevent it from downloading the image files that are used in Top Sites), so:

3. In Safari > Reset Safari…, check ‘Reset Top Sites’ and ‘Remove all webpage preview images’.



Click ‘Reset’.

4. Go to your home folder Library (~/Library) by clicking on the Folder icon in the dock, pressing ‘shift-command-g’, and typing ~/Library in the box.

Navigate to Caches > com.apple.Safari.

5. Click once on the Cache.db file. Hit ‘command-i’ on the keyboard. In the Get Info panel that opens, check the ‘Locked’ box. Close the panel.

6. Click on the Webpage Previews folder in com.apple.Safari and press ‘command-i’. Check the ‘Locked’ box. Close the panel.



7. Navigate back to Caches > Metadata > Safari> Bookmarks. Go into the Bookmarks folder, hit ‘command-a’ and then ‘command-delete’ to send all the selected files to the Trash.

8. With the Bookmarks folder selected in Finder, press ‘command-i’ and check the ‘Locked’ box. Close the panel.



That’s it. No more ‘Top Sites’, and no more wasted time or space downloading and storing webpage previews! :- )


And what about later versions of Safari? There’s no way to remove Top Sites in Safari 7 that I know of (if you know different, please leave a comment below). However, there’s no reason to suffer in silence! Let Apple’s Safari dev team know how much you dislike it:

http://www.apple.com/feedback/safari.html

Safari feedback

Related Posts
How to Troubleshoot Your Mac with FT2
how to clear Safari’s cookies on quit (Safari 7)
FastTasks – download the free OS X utility app from Applehelpwriter

how to remove Lion Recovery disk



If you have reverted your mac to Snow Leopard from Lion, its important that you also remove the Recovery HD, as it can compromise the security of your Snow Leopard installation (for security issues with Lion, see here). Reverting to SL via Time Machine or restoring from a clone will leave the Recovery partition in place, meaning anyone can boot into it and reset your Snow Leopard passwords merely by restarting your mac while holding down the ‘option’ key.

To remove the Recovery disk follow this procedure:

1. Revert back to Snow Leopard using Time Machine or a clone.

2. Once you’re up and running and have confirmed everything is good, go to Terminal (Applications > Utilities > Terminal) and paste/type this command to confirm the presence of the Recovery HD:

diskutil list

then press ‘Return’. If you see a partition labelled something like this

Apple_Boot Recovery HD (see image above)

then you will need to continue with the rest of the procedure. If the Recovery HD is not listed here, you do not have the Recovery partition and need not worry further.

3. If you find the Recovery HD in the list, paste the following command into Terminal:

defaults write com.apple.DiskUtility DUDebugMenuEnabled 1

Press ‘Return’.

Now open Disk Utility (Applications > Utilities > Disk Utility). In the menubar at the top, choose Debug > ‘Show every partition’

On the left in the main Disk Utility window, you’ll be able to see ‘Recovery HD’ (it’ll be greyed out). You can click ‘Mount’ in the taskbar to make it active, and you can now delete it using control-click/right click – erase or by using the ‘erase’ tab in DU’s window.

If you want to confirm that the Recovery disk is no longer present, go back to Terminal and type the command from step 2.


Related posts:
how to secure your mac (OS X Lion)

how to stop Versions in its tracks

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