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      "body": "Hi! I am a robot. I just upvoted you! I found similar content that readers might be interested in:\nhttp://thehackernews.com/search/label/Dirty%20COW%20Android%20malware",
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      "permlink": "first-android-malware-found-exploiting-dirty-cow-linux-flaw-to-gain-root-privileges",
      "title": "First Android Malware Found Exploiting Dirty COW Linux Flaw to Gain Root Privileges",
      "body": "![dirty_cow.jpg](https://steemitimages.com/DQmTJzA1hyaZGFhmDRGKy457aDmX9GK2a1EK2e1hBrJE9Cx/dirty_cow.jpg)\n\nNearly a year after the disclosure of the Dirty COW vulnerability that affected the Linux kernel, cybercriminals have started exploiting the vulnerability against Android users, researchers have warned.\n\nPublicly disclosed last year in October, Dirty COW was present in a section of the Linux kernel—a part of virtually every Linux distribution, including Red Hat, Debian, and Ubuntu—for years and was actively exploited in the wild.\nThe vulnerability allows an unprivileged local attacker to gain root access through a race condition issue, gain access to read-only root-owned executable files, and permit remote attacks.\n\n\nHowever, security researchers from Trend Micro published a blog post on Monday disclosing that the privilege escalation vulnerability (CVE-2016-5195), known as Dirty COW, has now been actively exploited by a malware sample of ZNIU, detected as AndroidOS_ZNIU.\n\nThis is the first time we have seen a malware sample to contain an exploit for the vulnerability designed to compromise devices running on the mobile platform.\n\nThis Dirty Cow Exploit found in Over 1,200 Android Apps\nThe malware uses the Dirty COW exploit to root Android devices via the copy-on-write (COW) mechanism in Android's Linux kernel and install a backdoor which can then be used by attackers to collect data and generate profit through a premium rate phone number.\n\nTrend Micro researchers detected the ZNIU malware in more than 1,200 malicious Android apps—some of which disguised themselves as pornography and gaming apps—alongside host websites containing malware rootkits that exploit Dirty Cow.\nWhile the Dirty Cow flaw impacts all versions of the Android operating system, the ZNIU's Dirty Cow exploit only affects Android devices with ARM/X86 64-bit architecture. However, the recent exploit can be used to bypass SELinux and plant backdoors.\n\n                                                      \"We monitored six ZNIU rootkits, four of which were Dirty COW exploits. The other two were KingoRoot, a rooting app, and the Iovyroot exploit (CVE-2015-1805),\" the researchers said. \n\"ZNIU used KingoRoot and Iovyroot because they can root ARM 32-bit CPU devices, which the rootkit for Dirty COW cannot.\"\n\n\n\nHere's How the ZNIU's Dirty Cow exploit Works \n\n\n![Figure_2_ZNIU_infection_chain.jpg](https://steemitimages.com/DQmcKXxW8vMyxk1HyECX8y7H2skAXUnsqaLiTq1jmbTVKCi/Figure_2_ZNIU_infection_chain.jpg)\n\ndirty-cow-android-malware,\nOnce downloaded and installed, the ZNIU malware-carrying app communicates with its command-and-control (C&C) server to check for code updates, while simultaneously the Dirty Cow exploit provides local privilege escalation to gain root access on the device, bypass system restrictions and \"plant a backdoor for potential remote control attacks in the future.\"\n\n \nThe malware also harvests the carrier information of the user and attempts to send payments via premium SMS messages that were directed to a dummy company in China.\nOnce the SMS transaction is over, the malware also deletes the messages from the device in order to erase evidence of any compromise.\nThe researchers found the malware has already infected more than 5,000 Android users across 40 countries in recent weeks, with the majority of victims found in China and India, while other resides in the United States, Japan, Canada, Germany and Indonesia.\nGoogle has released an update for Android that, among other fixes, officially fixes the Dirty COW vulnerability. The tech giant also confirmed that its Play Protect now protects Android users against this malware.\nThe easiest way to prevent yourself from being targeted by such clever malware is to avoid downloading apps from third-party sources and always stick to the official Google Play Store.\n\nhttps://source.android.com/security/bulletin/2016-12-01\nhttp://blog.trendmicro.com/trendlabs-security-intelligence/zniu-first-android-malware-exploit-dirty-cow-vulnerability/",
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      "body": "good post i wish you all the best",
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      "body": "Hi! I am a robot. I just upvoted you! I found similar content that readers might be interested in:\nhttp://thehackernews.com/search/label/Cardiac%20Scan",
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      "permlink": "cardiac-scan-authentication-your-heart-as-your-password",
      "title": "Cardiac Scan Authentication — Your Heart As Your Password",
      "body": "![cardiac-scan-authentication.png](https://steemitimages.com/DQmdfjn6UGtprivzVFtWiZx9wdLcVNKULHJBd2jTULr3L6p/cardiac-scan-authentication.png)\n\nForget fingerprint authentication, retinal scanning or advanced facial recognition that has recently been implemented by Apple in its iPhone X—researchers developed a new authentication system that doesn't require any of your interaction, as simply being near your device is more than enough.\n\nA group of computer scientists at the University of Buffalo, New York, have developed a new cardiac-scan authentication system that uses your heart's shape and size as a unique biometric to identify and authenticate you.\nDubbed Cardiac Scan, \n                                 the new authentication system makes use of low-level Doppler radar to wireless and continuously map out the dimensions of your beating heart, granting you access to your device so long as you're near it.\n\nIn simple words, \n                your office device should be able to recognise that it is you sitting in front of the computer, and sign you in without any password or interaction, and automatically should log you out if you step away from your computer for a lunch break.\nSince, according to researchers, your old ticker's shape and pulsations are unique, useful for identifying you, authenticating access, unlocking devices, and so on.\n\nThe researchers said your heart's shape and cardiac motions are unique and only present in a person who is alive, and therefore are harder to spoof than fingerprint or iris scanners, making Cardiac Scan a reliable way to identify you, authenticate access, or unlock devices.\n\n                                                       \"No two people with identical hearts have ever been found. And people's hearts do not change shape unless they suffer from serious heart disease,\"  Wenyao Xu, \n             lead author on the paper and assistant professor at University of Buffalo's department of computer science and engineering said in a Monday press release.\nThe Cardiac Scan system takes about 8 seconds to scan a heart for the very first time, and after that, the system continuously recognises your heart, making sure another user has not stepped into your device\n\nTo test their radar design, the researchers conducted a study on 78 people and found that their Cardiac Scan system scored a 98.61% balanced accuracy with an equal error rate (EER) of 4.42%, proving that it is a robust and usable continuous authentication system.\n\nWhen talking about potential health effects of the heart scans, the team said the strength of the signal is much less than that of Wi-Fi, and other smartphone authentication systems, which emit harmful SAR (Specific Absorption Rate) radiation, and therefore does not pose any health concern.\n\n\"We are living in a Wi-Fi surrounding environment every day, and the new system is as safe as those Wi-Fi devices,\" Xu said.\n \"The reader is about 5 milliwatts, even less than 1 percent of the radiation from our smartphones.\"\n\nCurrently, Cardiac Scan is not practical to use because of its size, but the team of researchers hopes to shrink it to the point where the system can be installed into the corners of computer keyboards and smartphones.\nHowever, there are some privacy and security concerns over the technology, like anyone can unlock your computer or smartphone as long as you are standing near your device. Another concern is that the device may end up not recognising a person if his/her heart is changed due to heart disease.\n\nFor more technical details, you can head on to the research paper [PDF] titled \"Cardiac Scan: A Non-Contact and Continuous Heart-Based User Authentication System.\"\n\nhttps://sctracy.github.io/chensong.github.io/pdf/mobicom17.pdf",
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