Like me:prevent Facebook from sharing private information to companies

Some ten million German use Facebook, share preferences, photos, status info. What data is public and what Facebook tells the advertisers about users? Who to "Like" is clicked, rate may be more than he bargained for.

The "Like" button-press daily in the social community Facebook million users. Thus, they express their consent to a comment from a friend or the enthusiasm of a YouTube video. Recently, this button is not only the offer of Facebook, other sites have the possibility to include the button. To recommend to friends with a click on an article about Bild.de or movie in the database Imdb.com.

What's on in the background?

• Facebook stores each "Like"-click on any website on its servers. One learns Facebook, which pages, articles and products are you well, you can present customized advertising and make money.

• Appears automatically every "Like"-Click on the so-called Wall of the user. What he has found it good to see, then in any case his Facebook contacts.

• If you do not change in the "privacy" your preferences, may even have seen each of the over 400 million Facebook members, which pages you "Like" is clicked.
• Anyway: The operator of the website, "Like me"on the clicked learns nothing about the Facebook visitors.

• But Facebook wants to pass on to another location information of members. This gives operators of some Internet pages automatically personal data of the user when he calls these pages on Facebook. What are the data automatically for this personalization, says not Facebook. At the start there's only three such sites, including the new online Microsoft Office (docs.com), but it will probably do more.

Stop the transfer of your data to third parties

Check out who does what can learn about you: After you log on to the account, privacy settings and personal information and contributions. What settings you make in order to prevent the disclosure of personal data to other site operators, shows the Quick Start Guide "No private data for foreign firms ".

Unintentionally, open the Preferences

For new registered users on Facebook in all areas apply initially to the company's defined preferences.Die sind seit dem bislang letzten Update der Plattform besonders offen gestaltet – und sie werden häufig geändert und umstrukturiert. Sun shows such as Facebook for all to see the address you biography, information about friends, family, relationship status, residence and hometown in your profile. Who does not want to disclose this information, must fight through the numerous adjustment possibilities. So you still enjoy "social networking " have, COMPUTER IMAGE shows in the Guide "Facebook: How to protect your privacy, " the most important settings.

Improvement in the defense against phishing attacks

A positive message: to avoid that strangers log into your Facebook account, the company now offers the opportunity to PCs or mobile phones to register. Each login attempt by an unknown device then follows the request for identification and an e-mail to the address you specify. This will help you when you sign a non-known computer wants. To activate the function, they also learn the "No private data for foreign firms ".