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

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211 views

Did somebody connect to my facebook account?

I have a problem. I'm not sure, but I think that somebody (in our home network) found out a password to my Facebook account and sometimes logs in. Is there a way to find out whether it is true? There ...
0
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2answers
138 views

Malicious capabilities of Social Botnets

A fairly new concept in Malware, especially in the case of botnets, is the emergence of social botnets. These botnets are comprised of accounts (either a newly created account or an existing hijacked ...
48
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5answers
97k 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 ...
2
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1answer
922 views

Facebook oAuth2 for Javascript client application

When implementing Facebook login using oAuth2 (the Javascript version), I receive an access token back from the Facebook auth server. So far so good. The problem I have is that I want to implement a ...
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2answers
177 views

How can Facebook use history data in browser

Web is filled up with the recent decision by Facebook to track user browsing history like adage.com andNYTimes. How can a web application use browsing history which is local to that browser? Is it ...
2
votes
1answer
496 views

How could the Skype app log me out from my Facebook account on OSX? Isn't this a huge security flaw?

According to this post (and to my personal experience), installing the Skype app on Facebook and the Skype client on OSX Mavericks will result in you being logged out from Facebook every time you ...
0
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1answer
174 views

Is this social engineering on facebook?

Today, I received a mail from fb saying that two of my friends have mentioned me in a comment. When I opened fb to see that comment, it was filled with random names (which obviously were their ...
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2answers
186 views

Can running a script while logged in compromise my facebook password?

In websites related to facebook malware analysis and information, we often see messages to the effect of if you have run this facebook app then your account has been compromised, or if you went to ...
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3answers
530 views

Is there a safe way to open a possibly spam facebook attachment?

I got a spam attachment from two of my facebook friends I know it is spam because of the nature of the content I also know that these aren't the type of people to send such a message to me ...
2
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0answers
433 views

Content-Security-Policy & Facebook login

This question seems to be related to http://stackoverflow.com/questions/15913200/facebook-js-sdk-not-executed-in-my-chrome-extension , but I am not developing a chrome extension. I am developing a ...
0
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1answer
189 views

Protect from Facebook like clickjack

In the past month I've seen a better grade growth in sites that have clickjacking scripts that make you like the webpage or the Facebook site's Page when you click anywhere on the page. I have even ...
1
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1answer
626 views

Heartbleed and Facebook logins on (once) vulnerable sites [duplicate]

Users have been advised to consult a list of sites affected by heartbleed and to change their passwords on those sites once they are no longer vulnerable. Facebook appears to have been unaffected; but ...
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0answers
71 views

Purpose of Secure Key in Facebook(and other provider) in OAUTH?

I see lot of OAUTH provider give us a secure key. What is the purpose of secure key in Facebook(and other provider) in OAUTH?
136
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5answers
18k 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 ...
1
vote
1answer
105 views

What makes it difficult for Facebook to implement restriction/ACL for accessing uploaded photo? [closed]

Facebook claims to allow restrict sharing to friends, certain network, or even custom when I upload photos. But it appears that this security is only in effect for the page where the photo is ...
0
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1answer
216 views

WireShark and Facebook [closed]

Some time ago i try Wireshark at my home local network just for see how it works. I scan the connection of my mac to the router and also to other external ips. The flow of connections were high when i ...
6
votes
3answers
3k views

Why did Facebook not use HSTS for a long time after it became available?

(Note that Facebook now does use HSTS. The question was asked at a time when they didn't.) To force a browser to always go directly to HTTPS for a website (and not rely on 302 redirects from the HTTP ...
1
vote
1answer
333 views

Should I encrypt Long-lived Facebook Access Token when storing them in my DB?

I own an application that grabs some Long-Lived Facebook Access token, in order to be use later according to the corresponding logged user. Should I need to encrypt them before storing them, to avoid ...
1
vote
2answers
544 views

Extracting Facebook ID or E-Mail from Browser History

While i was looking at my browser history i noticed there has been a facebook login from my computer, there are some facebook related messaging and profile links in my browser history (chrome). The ...
5
votes
1answer
667 views

Is it safe to use the official Facebook apps in a public Wifi?

I know, that my login credentials are sent in clear text for every body to read, when I log into facebook without using https from my mobile phone's browser in an public / non encrypted wifi. And I ...
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2answers
321 views

Is HTTPS + FacebookID + Secret Header token sufficient for a user login?

Disclosure - I'm not a security professional - but I have a security issue (I think) I need to articulate to a client. We have a partner organisation that has built an API for a mobile app we're ...
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votes
2answers
294 views

Inform someone about a hacked account [closed]

I'm not a hacker but recently I was able to get someone's email password. I want to teach him a lesson to be careful when using internet and to pay attention to his passwords but I have some problems: ...
1
vote
3answers
34k views

Trace facebook user ip. Is it even possible?

As I know facebook chat is working like user <> server <> user and it's not P2P. I was talking with some guys today and they were pretty sure it's possible to netstat a facebook user IP ...
2
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1answer
1k views

How could someone create a Facebook account with my email address without stealing it?

Someone with the same name as my sister seems to have inadvertently created a Facebook account with her email address. The funny thing is that this person doesn't seem to have ever accessed my ...
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0answers
377 views

Implementing OAuth flow in JavaScript

I am making a custom auth flow for the application. It is inspired by OAuth 2.0. Dev sends user to an auth page on my domain, passing callback_url and api_id. I redirect user to callback_url, passing ...
8
votes
2answers
396 views

How does an attacker abuse Facebook Connect with a leaked secret key?

I am reading about Facebook Connect and it looks a lot like OpenID Connect. Are these two similar enough that the Facebook Connect secret key is an OAuth Client Secret and therefore the same attacks ...
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3answers
6k views

Best practices on securely storing access tokens

What would be the best practices for storing access tokens of another api for your users? In particular I'm developing an application with some friends that let's user log into Facebook to both ...
5
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1answer
393 views

Safe to drop email verification when using Facebook login

If a user registers an account on my Website with Facebook authentication, can I safely skip the "verification email" that is usually sent to users who sign up without Facebook (that is, from a ...
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votes
1answer
1k views

Track IP address of criminals [closed]

Quite recently someone had maliciously stolen my pictures and created a fake Facebook and Instagram in my name, with abusive captions under my pictures. However, with the advice from the police, I had ...
3
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1answer
288 views

Should I trust and play every embedded video on Facebook?

Regarding to trusted sites like YouTube, should I trust other videos when embedded to Facebook, usually, when user shares a link a thumbnail image will be created and previewed, then, we need only to ...
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votes
1answer
283 views

How Facebook Determines User Browser Change? [duplicate]

I recently logged in to my Facebook from other PC and got notice. Please login from the PC you previously logged in. I want to know what information Facebook uses to determine this change? I changed ...
8
votes
1answer
467 views

Is there a list of phone numbers Facebook uses to send auth tokens?

Up to a few days ago, I always received Facebook auth tokens from numbers +181338477XX, except a few times from +85294985XXX. Problem is that lately I've been receiving codes directly from Italian ...
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votes
2answers
191 views

Security and privacy in email and other communications [closed]

In the light of newly discovered events like the NSA's PRISM program, I'm really concerned about the privacy & security of my personal emails. Chances are governments already have backdoor access ...
1
vote
1answer
13k views

Unsolicited Password Request from Facebook

Today I have received 3 emails to my three different addresses, one with Google, one with MSN, and one with my company. All emails were sent from password+kjdmiikvhppi at facebookmail.com email ...
0
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1answer
417 views

Facebook Login for Intranet

How safe is Facebook Login? I'm currently building an intranet, for my small company. We're 10 employees, and no risk of them messing up from inside. But is using Facebook Login safe for this? How ...
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votes
1answer
186 views

What keeps Facebook information safe from botnets and infected computers?

I've read a few articles which suggest that somewhere around 30-50% of PC's are infected with malware. Supposing that means that hackers then have control of those computers to do as they please (root ...
11
votes
2answers
292 views

Preventing Voter Fraud on a Social Media Contest

I'm creating a contest that will allow users to login using their Facebook & Twitter accounts and submit votes on videos. My clients concern is that users will game the system by logging into ...
5
votes
6answers
21k 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 ...
0
votes
1answer
207 views

Facebook data visibility to admin staff

I recently had a conversation with a friend in which I told him that everything written on Facebook can be seen by the Facebook admin staff. As a software engineer and database administrator I know ...
4
votes
3answers
298 views

February 7th 2013 Facebook integration error implications [duplicate]

What are the security, privacy, and overall availability implications of the Facebook event (link) yesterday? I was astonished to see site after site being redirected to a Facebook error page last ...
3
votes
4answers
611 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 ...
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votes
1answer
378 views

how to secure my login user id and passwords specially for facebook [closed]

i think they hack me with facebook cookies. i dont get what exactly is going on with me. every time i get the login notification from another ip location.i want to secure my cookies and i wanted to ...
0
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0answers
22 views

Facebook Login security concern with the javascritp JDK [duplicate]

Possible Duplicate: Isn’t OAuth, OpenID, Facebook Connect, and others crazy from a security standpoint? I have some real concerns about how to use facebook login for my wabb-app. I have a ...
3
votes
3answers
802 views

Access Control and Authentication using Facebook access tokens in a webapp

I'm working on a mobile app with a web backend. We'd like to have users authenticate (log in) themselves through Facebook only, so we don't have to store passwords etc. and don't force users to create ...
9
votes
1answer
3k views

Storing OAuth and other authentication tokens

We all know that when to store passwords, we should store it with one-way hash such as a variant of SHA, bcrypt or scrypt to prevent plain-text password leaks when the database is hacked. But what ...
2
votes
1answer
656 views

Why is a link posted to Facebook going through all redirects and showing info for final page only?

Today I read a post on a Facebook-group about a "problem" with links posted to Facebook. Appearently when you post a link at Facebook, the sites goes through the redirect(s) that may be on the site ...
2
votes
3answers
2k views

Will this work? Revealing identity (facebook) of person who clicks specially crafted link

There is a special Facebook link that will redirect anyone who clicks it to their own Facebook profile they are currently logged in on on their browser. The link goes like this: ...
16
votes
2answers
9k views

Facebook API : App Secret - possible misuse

I've recently find out that by simple quick look into compiled code of one of our applications, you can get both App ID (API Key) and App Secret for Facebook API I suppose that we should really keep ...
9
votes
3answers
262 views

Are bookmarklets safe with facebook data?

I usually play Mafia Wars and use bookmarklets like Spockholm, Arum, etc. Can these bookmarklets get my Facebook data when I run them, they usually ask to unframe the Facebook page? I was just ...