Bug

Twitter Denial of Service bug or How i could prevent all followers from reading or accessing literally ANY tweets!

 Hi Everyone, It’s Seif Elsallamy here, I have been away for a while, I really miss doing the stuff i’m good at, Yes breaking things, here take a look at my old posts. I’m back again to all of you with a cool denial of service bug I’ve discovered in Twitter but before diving in […]

Business Logic Vulnerabilities Series: Hot Fixes Getting Cold, A journey of 7 Versions/Years of a sole Facebook vulnerability!

Hi Folks, This is the third part of A brief on Abusing Invitation Systems blog post, In case you have missed the previous parts of this story of write-ups, it is advised to have a sneak peak at the First Second part before you go on with this post. So before we kick off to […]

Fitbit – APIs and Access Control Failures, a simple API bug allowed to harvest millions of user private activities!

 In this write-up we will show you how Seekurity team was able to harvest all the user’s private/custom activities leaves more than 20 million private custom activities data in danger. First of all, this write-up is not a new one and the discovery itself is dated back to 2017 but we decided to disclose it […]

Business Logic Vulnerabilities Series: A Story of a 4-Years-old (and counting) Facebook Security Bug!

Hi Guys, I am Ali Kabeel an Application Security Intern at Seekurity team. This is Second part of A brief on Abusing Invitation Systems blog post . In this blog post I will be mainly focusing on how I was able “by following the tips and tricks in the previous blog post” to bypass Facebook […]

The 2.5mins or 2.5k$ hawk-eye bug - A Facebook Pages Admins Disclosure Vulnerability!

Hi Guys, How are you doing? Well i’ll consider and hope the answer is “Fine”… Today i will show you a bug i found in Facebook without even using any kind of testing tools BUT those kind of bugs requires what’s more than tools, it requires a hawk-eye, A platform-aware bug hunter mentality, a poet and […]

The Fuzz...The Bug..The Action - A Race Condition bug in Facebook Chat Groups leads to spy on conversations!

Hi Folks, Long time no see, it’s Seif Elsallamy, Remember me ? if not 🙁 you may go through my previous blogs Stored XSS in the heart of the Russian email provider giant (Mail.ru)  ,  Rolling around and Bypassing Facebook’s Linkshim protection on iOS Today I’m gonna show you a race condition bug which i recently fall […]

When your privacy disclosure is a "feature" not a "bug" - Badoo & HotorNot failure!

Your privacy on the internet is the biggest concern ever and when it comes to “Dating websites” and “Social Networks” it means more and more! Let me tell you a story of two websites that don’t respect yours and putting it on danger…

Facebook Vulnerability - a “Cute Bug” that reveals the “likes” of deleted posts regardless of their privacy settings

 Hi Folks, My name is Mohamed Abdel Aty, an Egyptian Web Developer & Bug Hunter, Today I would like to share with you a “cute” bug I found while doing some bug hunting in Facebook. Testing different sub-domains is a common procedure in bug hunting , while searching the domain “mbasic.facebook.com” I noticed this link

FirefoxOS Find My Device Service Clickjacking Bug results in Changing PINs, Wiping and Locking Phones!

  Introduction: Physical devices connected with web applications made everything easy to be managed. Screen size, availability, usage etc… is what pushing everyone to manage their devices through their desktops/laptops! On the other hand such advantages poses a threat if these web applications contains security issues! For example android devices can be managed through “Google Device Manager”,  iOS […]

Facebook movies recommendation vulnerability - A bug capable of erasing all your important notifications!

Hi Folks, Facebook is the largest social network ever known on the internet, People are using Facebook for contacting friends, Family and sometimes for Work! When it comes to Work that means an important notifications from your company’s page, work account, work admins, business accounts, etc…

Facebook ClickJacking - How we put a new dress on Facebook UI

Hi Bug Hunters, Today we will explain how we redressed facebook ui and made it so easy to fool a victim to for example, Add the attacker as a member in one of his own secret groups on facebook. Here’s some details about the issue:

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