We at AdGuard put a lot of our effort into protecting people's privacy, and many AdGuard users value our products exactly for this reason. One of the biggest challenges has always been not just providing good protection, but doing it for everyone, no matter where the person is and what device do they use.

Aujourd'hui, j'aimerais parler à propos d'OpenVPN. Pour ceux qui ne connaissent pas, OpenVPN est un logiciel libre et avec le code est ouvert et qui implémente des différentes façons de créer des réseaux virtuels (VPN) sécurisés * Wikipedia. L'application est développée par OpenVPN Incorporation et il propose également différents services payants privatetunnel.

Le but de cette page est de synthétiser, clarifier et documenter les raisons techniques, économiques et politiques (passées et présentes) pour lesquelles je ne veux plus remettre les pieds sous Windows et pour lesquelles je n'arrive plus à faire confiance à Microsoft. Chacun des points est argumenté et (quand cela est possible) donne les liens correspondants, tout comme je l'avais fait à l'époque pour Apple.

Cette page n'est sans doute pas exhaustive.

[Infographie] Il était une fois l'ours connecté mal sécurisé

Revue stratégique de cyberdéfense 2018

We investigated the top free VPN (Virtual Private Network) apps in Apple's App Store and Google Play and found that over half are run by highly secretive companies with Chinese ownership. Very few of these hugely popular apps, which have hundreds of millions of installs worldwide, do anywhere enough to deserve the trust of consumers looking to protect their privacy.

Outil indispensable à la maitrise de son système d’information (SI) et obligatoire pour les Opérateurs d’importance vitale (OIV), la cartographie du SI permet de connaitre l’ensemble des éléments qui le constituent pour en obtenir une meilleure lisibilité, et donc un meilleur contrôle. Elle s’intègre dans une démarche globale de gestion des risques.

It's been a while since we last wrote about Layer 3/4 DDoS attacks on this blog. This is a good news - we've been quietly handling the daily onslaught of DDoS attacks. Since our last write-up, a handful of interesting L3/4 attacks have happened. Let's review them.

On November 12th, 2018, between 1:00 PM and 2:23 PM PST, ThousandEyes noticed issues connecting to G Suite, a critical application for our organization. Reviewing ThousandEyes Endpoint Agent stats, we noticed this was impacting all users at the ThousandEyes office. The outage not only affected G Suite, but also Google Search as well as Google Analytics.

Google is investigating an unorthodox routing of internet traffic that on Monday sent traffic bound for its cloud services instead to internet service providers in Nigeria, Russia and China.

We use our web browsers to communicate, shop, get directions, research, and ask questions we are too embarrassed to ask a person. It’s no wonder that “How do I protect my web browsing?” is one of the most common questions people ask when they start learning about digital security. The various methods for protecting your browser security can be confusing, and can work together in counterintuitive ways.

Emmanuel Macron doit lancer ce lundi à l’Unesco un appel sur la sécurité du cyberespace. Une initiative qui survient alors que de plus en plus d’Etats ont intégré ce domaine à leur doctrine militaire.

I like VirtualBox and it has nothing to do with why I publish a 0day vulnerability. The reason is my disagreement with contemporary state of infosec, especially of security research and bug bounty.

The UK Public Sector DNS Service is one of the NCSC’s most widely deployed Active Cyber Defence capabilities across the public sector to date, and has been outlined as a top priority for government departments in enabling them to become more cyber resilient.

This is a cross platform python framework which allows you to build custom payloads for Windows, Mac OSX and Linux as well. You are able to select whether the payload binds to a specific IP and port, listens for a connection on a port, option to send an email of system info when the system boots, and option to start keylogger on boot. Payloads created can only run on the OS that they were created on.

We have analyzed the hardware full-disk encryptionof several SSDs by reverse engineering their firmware. In theory,the security guarantees offered by hardware encryption aresimilar to or better than software implementations.

Les fonctions de hachage permettent d’assurer l’intégrité des données. Les signatures numériques, en plus d’assurer l’intégrité, permettent de vérifier l’origine de l’information et son authenticité. Enfin, le chiffrement, parfois improprement appelé cryptage, permet de garantir la confidentialité d’un message.

Une variante du ver Stuxnet plus sophistiquée et dangereuse a ciblé l'infrastructure réseau de l'Iran. L'agence de la défense civile de ce pays ne s'est pas étendue sur d'éventuels dégâts.

This post is about a heap buffer overflow vulnerability which I found in Apple's XNU operating system kernel. I have written a proof-of-concept exploit which can reboot any Mac or iOS device on the same network, without any user interaction. Apple have classified this vulnerability as a remote code execution vulnerability in the kernel, because it may be possible to exploit the buffer overflow to execute arbitrary code in the kernel.

Because computers play such critical roles in our lives, and because we input and view so much personally identifiable information (PII) on them, it’s imperative to implement and maintain computer security. Strong computer security ensures safe processing and storage of our information.