I have a unknown person's macbook connected to my network. How do I remove it?

I have an unknown person's macbook connected to my computer as a "shared" directory. How can I remove it? i'm signed in as my computer's administrator, but it says I don't have sufficient permissions to remove it...

Good suggestion, with an addendum.
If your Router supports WPA, please use that instead of WEP. WEP is known to be insecure, it can be cracked by an experienced person in just a few minutes using network analysis tools.
Go WPA instead

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I think i have a virus on my Macbook Pro, OS X Yosemite, how do i wipe my computer clean without erasing photos and music etc?

i think i have a virus on my Macbook Pro, OS X Yosemite, how do i wipe my computer clean without erasing photos and music etc?

The update alerts are fake, and are intended to dupe you into installing malware or disclosing private information so that your identity can be stolen.
You might get the alerts when visiting a website that has been hacked. Don't visit the site again. If applicable, notify the site administrator of the problem, but don't send email to an unknown party.
If you get the alerts when visiting more than one well-known website, such as Google, YouTube, or Facebook, then they may be the result of an attack on your router that has caused you to get false results from looking up the addresses of Internet servers. Requests sent to those sites are redirected to a server controlled by the attacker. It's possible, but less likely, that the DNS server used by your ISP has been attacked.
Back up all data.
Unlock the Network preference pane, if necessary, by clicking the lock icon in the lower left corner and entering your password. Cllck Advanced, open the DNS tab, and change the server addresses to the following:
          8.8.8.8
          8.8.4.4
That's Google DNS. Click OK, then Apply.
In Safari, select
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The router's documentation should tell you how to reset it to the factory default state. Usually there's a pinhole switch somewhere in the back. It may be labeled "RESET." Insert the end of a straightened paper clip or a similar tool and press the button inside for perhaps 15 seconds, or as long as the instructions specify.
After resetting the router, quit the web browser and relaunch it while holding down the shift key. From the Safari menu bar, select
          Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data
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Then go through the router's initial setup procedure. I can't be specific, because it's different for every model. The key points are these:
1. Don't allow the router to be administered from the WAN (Internet) port, if it has that option. Most do.
2. Set a strong password to protect the router's settings: at least ten random upper- and lower-case letters and digits. Don't use the default password or any other that could be guessed. Save the password in your keychain. Any password that you can remember is weak.
3. If the router is wireless, or if you have a wireless access point on the network, use "WPA 2 Personal" security and set a different strong password to protect the network. If the router or access point doesn't support WPA 2, it's obsolete and must be replaced.
During the time the router was compromised, you were redirected to bogus websites. If you ever connected to a secure site and got a warning from your browser that the identity of the server could not be verified, and you dismissed that warning in order to log in, assume that your credentials for the site have been stolen and that the attacker has control of the account. This warning also applies to all websites on which you saw the fake update alerts.
Check the router manufacturer's website for a firmware update.
If you downloaded and installed what you thought was a software update, ask for instructions.

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Hello chlanli
You would need to use one Apple ID for purchases in order to get them across all of your devices and computer. If you want you can use one Apple ID for purchases and the other one to sync personal data. The article below will explain further.
Using your Apple ID for Apple services
http://support.apple.com/kb/ht4895
Regards,
-Norm G.

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- Apple will do nothing without a court order
Reporting a lost or stolen Apple product
- iOS: How to find the serial number, IMEI, MEID, CDN, and ICCID number

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Happy New Year

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Strangely enough we can not see you so it really helps if you share with use exactly what you have, exactly what you did and details about the problem
what version of iPhoto and of the OS? What exact steps did you do? where are you seeing these "thousands of cascading photos" now and using what software and what exactly did you want to accomplish
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LN

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MacBook Connection to Home Network

I have my MacBook connecting to my wireless router pretty well, signal is always good and internet is fine. However, getting (and sometimes keeping) a network connection to my XP desktop is proving frustrating.
Accessing Finder>Network I sometimes only get Library and Servers, other times I'll find a folder for my home network as well as two other folders called 'My Network' and 'Workgroup'. I'm assuming these are default folders, because when I try to delete them I get an error message saying that I don't have sufficient privileges. If I don't, then who does?? I'm the only account on there and am obviously the administrator.
Also, I can access my XP shared files from the Mac (when I see the network) but when looking at My Network Places on XP I don't see the Mac under the workgroup computers. I get a SharedDocs folder for the Mac under 'The Internet' not under 'Local Network' and when I double-click it a dialog box says Connect to MacBook and asks me for a user name and password.
Which seems fair enough, except that any user name I give it gets an error message saying '\\MacBook\SharedDocs is not accessible' and 'The network path was not found'. I'm only using one password on OSX for admin functions and don't have a password set up for communications between machines. No combination of any user name or short name and password or none gets a connection.
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Jay, we did use a USB SATA external HD case for the old HD, downloaded it to a special folder in Documents, but apparently, not all of the data was moved. We cannot find her data files (Excel, etc.). Also, when we look at the old drive as an external, we cannot see the data. The applications are there, but cannot find data. We even used Find to look for them, and nothing was found.
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Hello penel2907,
This could be due to a hardware issue. You may try using a different USB port on your computer.
Check for hardware issues
Related errors: 1, 3, 10-47, 1002, 1011, 1012, 1014, 1000-1020, 1669.
Try to restore your iOS device two more times while connected with a cable, computer, and network you know are good. Also, confirm your security software and settings are allowing communication between your device and update servers. If you still see the error message when you update or restore, contact Apple support.
Resolve specific iTunes update and restore errors
http://support.apple.com/kb/TS3694
Cheers,
Allen

MacBook to MacBook connection via Home Network

Hello everyone, please forgive me if this is a duplicate post. I have checked the other posts and all I see is people trying to connect MacBook to either iPod or other device, but not to another MacBook.
My friend broke her screen on her MacBook and ended up buying a new MacBook. Now she wants to transfer all her data from the old MacBook to the new MacBook. She have DSL at home, but her two MacBooks do not see each other on the network. Is there a special setting that needs to be changed? Or how would she be able to set it up so that she can access the old MacBook with the new MacBook?
Any advice would be greatly appreciated. Thanks.

Jay, we did use a USB SATA external HD case for the old HD, downloaded it to a special folder in Documents, but apparently, not all of the data was moved. We cannot find her data files (Excel, etc.). Also, when we look at the old drive as an external, we cannot see the data. The applications are there, but cannot find data. We even used Find to look for them, and nothing was found.
What is Migration Assistant? Is that part of the OS 10.6 applications menu? Or do we need to download it? Thanks for your advice and help.

I have a unknown person's macbook connected to my network. How do I remove it?

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