Catégorie : Actualités

Posted by Andy Qin, Irene Ang, Kostya Serebryany, Evgenii Stepanov Since 2018, Google has partnered with ARM and collaborated with many ecosystem partners (SoCs vendors, mobile phone OEMs, etc.) to develop Memory Tagging Extension (MTE) technology. We are now happy to share the growing adoption in the ecosystem. MTE is now available on some OEM devices (as noted in a recent blog post by Project Zero) with Android 14 as a developer option, enabling developers to use MTE to discover memory safety issues in their application easily. The security landscape is changing dynamically, new attacks are becoming more complex and costly to mitigate. It’s becoming increasingly important to detect and prevent security vulnerabilities early in the software development cycle and also have the capability to mitigate the security attacks at…

Posted by Chrome Security team Improving the interoperability of web services is an important and worthy goal. We believe that it should be easier for people to maintain and control their digital identities. And we appreciate that policymakers working on European Union digital certificate legislation, known as eIDAS, are working toward this goal. However, a specific part of the legislation, Article 45, hinders browsers’ ability to enforce certain security requirements on certificates, potentially holding back advances in web security for decades. We and many past and present leaders in the international web community have significant concerns about Article 45's impact on security. We urge lawmakers to heed the calls of scientists and security experts to revise this part of the legislation rather than erode users’ privacy and security on the…

Posted by Ivan Lozano and Roger Piqueras Jover Android’s defense-in-depth strategy applies not only to the Android OS running on the Application Processor (AP) but also the firmware that runs on devices. We particularly prioritize hardening the cellular baseband given its unique combination of running in an elevated privilege and parsing untrusted inputs that are remotely delivered into the device. This post covers how to use two high-value sanitizers which can prevent specific classes of vulnerabilities found within the baseband. They are architecture agnostic, suitable for bare-metal deployment, and should be enabled in existing C/C++ code bases to mitigate unknown vulnerabilities. Beyond security, addressing the issues uncovered by these sanitizers improves code health and overall stability, reducing resources spent addressing bugs in the future. An increasingly popular attack surface As…

Elie Bursztein, Cybersecurity & AI Research Director, and Marina Zhang, Software Engineer Systems such as Gmail, YouTube and Google Play rely on text classification models to identify harmful content including phishing attacks, inappropriate comments, and scams. These types of texts are harder for machine learning models to classify because bad actors rely on adversarial text manipulations to actively attempt to evade the classifiers. For example, they will use homoglyphs, invisible characters, and keyword stuffing to bypass defenses.  To help make text classifiers more robust and efficient, we’ve developed a novel, multilingual text vectorizer called RETVec (Resilient & Efficient Text Vectorizer) that helps models achieve state-of-the-art classification performance and drastically reduces computational cost. Today, we’re sharing how RETVec has been used to help protect Gmail inboxes. Strengthening the Gmail Spam Classifier…

Posted by Keishi Hattori, Sergei Glazunov, Bartek Nowierski on behalf of the MiraclePtr team Welcome back to our latest update on MiraclePtr, our project to protect against use-after-free vulnerabilities in Google Chrome. If you need a refresher, you can read our previous blog post detailing MiraclePtr and its objectives. More platforms We are thrilled to announce that since our last update, we have successfully enabled MiraclePtr for more platforms and processes: In June 2022, we enabled MiraclePtr for the browser process on Windows and Android. In September 2022, we expanded its coverage to include all processes except renderer processes. In June 2023, we enabled MiraclePtr for ChromeOS, macOS, and Linux. Furthermore, we have changed security guidelines to downgrade MiraclePtr-protected issues by one severity level! Evaluating Security Impact First let’s focus…

Cloudflare has revealed that it was the target of a likely nation-state attack in which the threat actor leveraged stolen credentials to gain unauthorized access to its Atlassian server and ultimately access some documentation and a limited amount of source code. The intrusion, which took place between November 14 and 24, 2023, and detected on November 23, was carried out "with the goal of

Three Americans were charged this week with stealing more than $400 million in a November 2022 SIM-swapping attack. The U.S. government did not name the victim organization, but there is every indication that the money was stolen from the now-defunct cryptocurrency exchange FTX, which had just filed for bankruptcy on that same day. A graphic illustrating the flow of more than $400 million in cryptocurrencies stolen from FTX on Nov. 11-12, 2022. Image: Elliptic.co. An indictment unsealed this week and first reported on by Ars Technica alleges that Chicago man Robert Powell, a.k.a. “R,” “R$” and “ElSwapo1,” was the ringleader of a SIM-swapping group called the “Powell SIM Swapping Crew.” Colorado resident Emily “Em” Hernandez allegedly helped the group gain access to victim devices in service of SIM-swapping attacks between…

Three Americans were charged this week with stealing more than $400 million in a November 2022 SIM-swapping attack. The U.S. government did not name the victim organization, but there is every indication that the money was stolen from the now-defunct cryptocurrency exchange FTX, which had just filed for bankruptcy on that same day. A graphic illustrating the flow of more than $400 million in cryptocurrencies stolen from FTX on Nov. 11-12, 2022. Image: Elliptic.co. An indictment unsealed this week and first reported on by Ars Technica alleges that Chicago man Robert Powell, a.k.a. “R,” “R$” and “ElSwapo1,” was the ringleader of a SIM-swapping group called the “Powell SIM Swapping Crew.” Colorado resident Emily “Em” Hernandez allegedly helped the group gain access to victim devices in service of SIM-swapping attacks between…