Facebook is an online social networking service founded in February 2004 by Mark Zuckerberg.

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121
votes
5answers
13k views

Does Facebook store plain-text passwords?

I was about to reset my Facebook password and got this error: Your new password is too similar to your current password. Please try another password. I assumed that Facebook stores only password ...
41
votes
5answers
18k views

Anonymity on Facebook - how do they suggest people I should know?

I want to know how Facebook discovers the people who you know in real life or who know you. I tried the following to see if Facebook can still discover my acquaintances in real life and suggest them ...
22
votes
1answer
2k views

Facebook password lowercase and uppercase

Recently I logged into my Facebook account and then noticed that my caps lock was on. So I tried to log in again with and without capslock on. I got in both times. Then I tried to log in with the ...
5
votes
6answers
15k views

Is update@em.facebookmail.com legitimate?

I'm having a hard time figuring out whether this email a friend of mine got is legit or a scam. The weird thing is there's only one link to facebook.com, which is the one about facebook terms. All the ...
3
votes
4answers
494 views

How can I constrain or limit 3rd party Javascript (*.js) files that can DOS my site?

Many website owners integrate Google analytics, various Facebook or Twitter social media javascript plug ins into their web pages. The problem is that this trust seems to be "all or nothing", meaning ...
2
votes
2answers
797 views

Why doesn't Facebook use HSTS

To force a browser to always use HTTPS for a website (and not rely on 302 redirects to visit the HTTPS version), HTTP Strict Transport Security can be used. Please refer to ...