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Facebook hacking is even worse than at first, the company admitted.
The site had previously admitted that a hole in its code would allow people to access any account, a problem that affects about 50 million users.
But later, he added that the problem would also affect his service "Facebook Login", which allows other applications to use the Facebook account of people to connect.
1/9 Lock your profile
If you have not done so already, do it now. In Settings, click the Privacy tab. From there, you can control who sees your future posts and your list of friends. Choose from Public, Friends, Myself Only, and Custom from the drop-down menu.
2/9 Limit old messages
Unfortunately, changing this has no effect on the ability to see your previous Facebook posts. Instead, on the Privacy page, you must click Limit Previous Messages, then select Limit Old Messages, and then click Confirm in the pop-up window.
3/9 Make you harder to find
You can prevent completely random people from adding you by selecting Friends from your friends from the drop-down menu in the Who can send you friend requests? section of the privacy page. It is also helpful to limit who can find your Facebook profile with your number and email address.
At the bottom of the page, you have the option to prevent the search engines outside of Facebook from creating links to your profile.
4/9 Control access to your timeline
You can limit the number of people who can publish items on your timeline and those who can also see posts on your timeline. In Settings, go to Timeline and Marking, and edit the sections you want to lock.
5/9 Block people
When you block a person, they can not see the things you post on your timeline, tag, invite you to events or groups, do not start a conversation with you, or add to your friends. To do this, go to Settings and Blocking. Unfortunately, you must block people on Messenger separately.
You can also add friends to your shortlist here, which means that they will still be friends but will only be able to see your public posts and the things you share on a friend 's timeline.
6/9 Revision tags
One of Facebook's most practical privacy features is the ability to review the posts you've been tagged before they appear on your timeline. They will remain visible in the news feed as long as they are new, but they will not be linked to your profile forever. In the timeline and markup, turn on the Timeline Review Controls.
7/9 Clean your apps
You can view a list of all the apps you have connected to your Facebook account by going to Settings & Apps. The list could be longer than expected. It's worth putting things in order to make sure that things you no longer use lose access to your personal information.
If you do not want to sign in to websites and apps with your facebook account, scroll down and deactivate the platform.
8/9 Change your preferences for ads
You can view a list of everything Facebook thinks about you and change your advertising preferences by going to Settings and Ads. Much more information is displayed on the desktop site than the application, so we recommend doing it on a computer.
9/9 Download your data
Facebook allows you to download all the data that it has about you, including the publications you have shared, your messages and photos, the ads you clicked on and even the registered IP addresses when you login or close session. It's a lot of information that you have to download to make sure you never share too much on the social network.
1/9 Lock your profile
If you have not done so already, do it now. In Settings, click the Privacy tab. From there, you can control who sees your future posts and your list of friends. Choose from Public, Friends, Myself Only, and Custom from the drop-down menu.
2/9 Limit old messages
By annoying, changing that has no effect on who is able to see your old Facebook posts. Instead, on the Privacy page, you must click Limit Previous Messages, then select Limit Old Messages, and then click Confirm in the pop-up window.
3/9 Make you harder to find
You can prevent completely random people from adding you by selecting Friends from your friends from the drop-down menu in the Who can send you friend requests? section of the privacy page. It is also helpful to limit who can find your Facebook profile with your number and email address.
At the bottom of the page, you can prevent search engines outside Facebook from accessing your profile.
4/9 Control access to your timeline
You can limit the number of people who can publish items on your timeline and those who can also see posts on your timeline. In Settings, go to Timeline and Marking, and edit the sections you want to lock.
5/9 Block people
When you block a person, they can not see the things you post on your timeline, tag, invite you to events or groups, do not start a conversation with you, or add to your friends. To do this, go to Settings and Blocking. Unfortunately, you must block people on Messenger separately.
You can also add friends to your shortlist here, which means that they will still be friends but will only be able to see your public posts and the things you share on a friend 's timeline.
6/9 Revision tags
One of the most manageable privacy features of Facebook is the ability to see the posts where you've been tagged before they appear on your timeline. They will remain visible in the news feed as long as they are new, but they will not be linked to your profile forever. In the timeline and markup, turn on the Timeline Review Controls.
7/9 Clean your apps
You can view a list of all the apps you have connected to your Facebook account by going to Settings & Apps. The list could be longer than expected. It's worth putting things in order to make sure that things you no longer use lose access to your personal information.
If you do not want to sign in to websites and apps with your facebook account, scroll down and deactivate the platform.
8/9 Change your preferences for ads
You can view a list of everything Facebook thinks about you and change your advertising preferences by going to Settings and Ads. Much more information is displayed on the desktop site than the application, so we recommend doing it on a computer.
9/9 Download your data
Facebook allows you to download all the data that it has about you, including the publications you have shared, your messages and photos, the ads you clicked on and even the registered IP addresses when you login or close session. It's a lot of information that you have to download to make sure you never share too much on the social network.
This means that once a hacker would have access to a person's Facebook account, she could end up in the rest of her digital life. This could include other Facebook applications, such as Instagram, but also third-party applications using the login service, such as Tinder.
"The vulnerability was on Facebook, but these access tokens allowed someone to use the account as he was the owner," said Guy Rosen, vice president. of Facebook's product management, which revealed the vulnerability in a blog Friday.
The latest hacking involved bugs in Facebook's "show as" feature, which allowed people to see how their profile was portrayed to others. Attackers used this vulnerability to steal digital keys, called "access tokens", from accounts of people whose profiles were searched for using the "View as" feature. The attack is then moved from one Facebook friend from one user to another. Possession of these tokens would allow attackers to control these accounts.
One of the more than a year-old bugs was affecting how the "View As" feature interacted with Facebook's video upload feature for "Happy Birthday" posts, Rosen said . But it's only in mid-September that Facebook has noticed an unusual upsurge in activity, and not until this week that it learned the attack, did it? -he declares.
The nature of the hack means that there are few users who can protect themselves. Facebook says it has already fixed the flaw by disconnecting everyone from its accounts and suspending the "View as" feature.
"There is no evidence that people need to take action such as changing their passwords or deleting their profiles," said a spokesman for the National Cyber Security Center.
"However, users must be particularly vigilant about possible phishing attacks, because if the data had been accessed, they could be used to make fraudulent messages more credible."
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