Catégorie : Sécurité

Researchers say mobile malware purveyors have been abusing a bug in the Google Android platform that lets them sneak malicious code into benign mobile apps and evade security scanning tools. Google says it has updated its app malware detection mechanisms in response to the new research. At issue is a mobile malware obfuscation method identified by researchers at ThreatFabric, a security firm based in Amsterdam. Aleksandr Eremin, a senior malware analyst at the company, told KrebsOnSecurity they recently encountered a number of mobile banking trojans abusing a bug present in all Android OS versions that involves corrupting components of an app so that its new evil bits will be ignored as invalid by popular mobile security scanning tools, while the app as a whole gets accepted as valid by Android…

Maddie Stone, Security Researcher, Threat Analysis Group (TAG) This is Google’s fourth annual year-in-review of 0-days exploited in-the-wild [2021, 2020, 2019] and builds off of the mid-year 2022 review. The goal of this report is not to detail each individual exploit, but instead to analyze the exploits from the year as a whole, looking for trends, gaps, lessons learned, and successes.  Executive Summary 41 in-the-wild 0-days were detected and disclosed in 2022, the second-most ever recorded since we began tracking in mid-2014, but down from the 69 detected in 2021.  Although a 40% drop might seem like a clear-cut win for improving security, the reality is more complicated. Some of our key takeaways from 2022 include: N-days function like 0-days on Android due to long patching times. Across the Android…

The Russian government today handed down a treason conviction and 14-year prison sentence on Iyla Sachkov, the former founder and CEO of one of Russia’s largest cybersecurity firms. Sachkov, 37, has been detained for nearly two years under charges that the Kremlin has kept classified and hidden from public view, and he joins a growing roster of former Russian cybercrime fighters who are now serving hard time for farcical treason convictions. Ilya Sachkov. Image: Group-IB.com. In 2003, Sachkov founded Group-IB, a cybersecurity and digital forensics company that quickly earned a reputation for exposing and disrupting large-scale cybercrime operations, including quite a few that were based in Russia and stealing from Russian companies and citizens. In September 2021, the Kremlin issued treason charges against Sachkov, although it has refused to disclose…

Researchers this month uncovered a two-year-old Linux-based remote access trojan dubbed AVrecon that enslaves Internet routers into botnet that bilks online advertisers and performs password-spraying attacks. Now new findings reveal that AVrecon is the malware engine behind a 12-year-old service called SocksEscort, which rents hacked residential and small business devices to cybercriminals looking to hide their true location online. Image: Lumen’s Black Lotus Labs. In a report released July 12, researchers at Lumen’s Black Lotus Labs called the AVrecon botnet “one of the largest botnets targeting small-office/home-office (SOHO) routers seen in recent history,” and a crime machine that has largely evaded public attention since first being spotted in mid-2021. “The malware has been used to create residential proxy services to shroud malicious activity such as password spraying, web-traffic proxying and…

Many things have changed since 2018, such as the names of the companies in the Fortune 100 list. But one aspect of that vaunted list that hasn’t shifted much since is that very few of these companies list any security professionals within their top executive ranks. The next time you receive a breach notification letter that invariably says a company you trusted places a top priority on customer security and privacy, consider this: Only four of the Fortune 100 companies currently list a security professional in the executive leadership pages of their websites. This is actually down from five of the Fortune 100 in 2018, the last time KrebsOnSecurity performed this analysis. A review of the executives pages published by the 2022 list of Fortune 100 companies found only four…

Julie Qiu, Go Security & Reliability and Jonathan Metzman, Google Open Source Security Team Previously in our Supply chain security for Go series, we covered dependency and vulnerability management tools and how Go ensures package integrity and availability as part of the commitment to countering the rise in supply chain attacks in recent years.  In this final installment, we’ll discuss how “shift left” security can help make sure you have the security information you need, when you need it, to avoid unwelcome surprises.  Shifting left The software development life cycle (SDLC) refers to the series of steps that a software project goes through, from planning all the way through operation. It’s a cycle because once code has been released, the process continues and repeats through actions like coding new features,…

Posted by Alex Gough, Chrome Security Team Security reviewers must develop the confidence and skills to make fast, difficult decisions. A simplistic piece of advice to reviewers is “just be confident” but in reality that takes practice and experience. Confidence comes with time, and people are there to support each other as we learn. This post shares advice we give to people doing security reviews for Chrome. Security Review in Chrome Chrome has a lightweight launch process. Teams write requirements and design documents outlining why the feature should be built, how the feature will benefit users, and how the feature will be built. Developers write code behind a feature flag and must pass a Launch Review before turning it on. Teams think about security early-on and coordinate with the security…

Posted by Giles Hogben, Privacy Engineering Director Most modern consumer messaging platforms (including Google Messages) support end-to-end encryption, but users today are limited to communicating with contacts who use the same platform. This is why Google is strongly supportive of regulatory efforts that require interoperability for large end-to-end messaging platforms. For interoperability to succeed in practice, however, regulations must be combined with open, industry-vetted, standards, particularly in the area of privacy, security, and end-to-end encryption. Without robust standardization, the result will be a spaghetti of ad hoc middleware that could lower security standards to cater for the lowest common denominator and raise implementation costs, particularly for smaller providers. Lack of standardization would also make advanced features such as end-to-end encrypted group messaging impossible in practice – group messages would have…

[This is Part III in a series on research conducted for a recent Hulu documentary on the 2015 hack of marital infidelity website AshleyMadison.com.] In 2019, a Canadian company called Defiant Tech Inc. pleaded guilty to running LeakedSource[.]com, a service that sold access to billions of passwords and other data exposed in countless data breaches. KrebsOnSecurity has learned that the owner of Defiant Tech, a 32-year-old Ontario man named Jordan Evan Bloom, was hired in late 2014 as a developer for the marital infidelity site AshleyMadison.com. Bloom resigned from AshleyMadison citing health reasons in June 2015 — less than one month before unidentified hackers stole data on 37 million users — and launched LeakedSource three months later. Jordan Evan Bloom, posing in front of his Lamborghini. On Jan. 15, 2018,…

[This is Part II of a story published here last week on reporting that went into a new Hulu documentary series on the 2015 Ashley Madison hack.] It was around 9 p.m. on Sunday, July 19, when I received a message through the contact form on KrebsOnSecurity.com that the marital infidelity website AshleyMadison.com had been hacked. The message contained links to confidential Ashley Madison documents, and included a manifesto that said a hacker group calling itself the Impact Team was prepared to leak data on all 37 million users unless Ashley Madison and a sister property voluntarily closed down within 30 days. A snippet of the message left behind by the Impact Team. The message included links to files containing highly sensitive information, including snippets of leaked user account data,…