Tag Archives: Android

Zero-Day Flaw Found in 'Linux Kernel' leaves Millions Vulnerable

A new critical zero-day vulnerability has been discovered in the Linux kernel that could allow attackers to gain root level privileges by running a malicious Android or Linux application on an affected device.

The critical Linux kernel flaw (CVE-2016-0728) has been identified by a group of researchers at a startup named Perception Point.

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The vulnerability was present in

Give Your Android Device More Space, Speed & Battery Life

Ready to use our new AVG Cleaner for Android™ 3.0 and its new one-tap ANALYZE view or Smart Photo Cleaner? We’ll guide you through the most important steps of a typical clean-up to make sure you’re not missing anything.

Step 1: Download & launch the new app! Got it? Tap the Analyze button.

Step 2: Clean up photos! Wait for the results. In this example, it found 4 photos that were classified as bad or potentially unwanted:

Tap on Review and Clean, and then use either thumbs down/thumbs up or swipe left or right to delete a photo or keep it. AVG Cleaner for Android will now start learning which photos you like or don’t like to give you more personalized suggestions. But no worries, it will never automatically delete anything – the choice is always yours! Next, go to the Bad Photos and Similar Photos sections to clean up the ones you no longer need. Here, you can mark photos you no longer want:

Got them all? Tap on Delete X Photos! You’ll then find yourself in the Analysis Results area again.

Step 3 – Clean cache: Every time you use your apps, they create what’s called “cache” files. For example, Facebook temporarily stores data from your timeline once you open it to access it quicker next time you open the app. However, many apps tend to forget to delete this data which can accumulate to quite an amount wasted storage. Just tap on Clean Cache and be done with it!

Step 4 – Clean history: Your browser leaves behind traces, such as cookies, temporary browsing data and long-forgotten downloads.

Step 5 – Stop Battery Hogs: The next slice shows you which features of your phone draw the most battery life from your phone – and allows you to turn it off!

Tap to turn anything off you might not need, especially if you’re on the go and without a power outlet in sight.

Step 6 – Stop Memory Hogs: If any currently running app is consuming more than 1% of your memory, they will show up here. You can then go ahead and Force Stop them or Uninstall if you don’t need these anymore.

Step 7 – Get rid of Battery-draining apps: Is your phone not making it to the end of the day without recharging? It may not be your phone itself, but some renegade app(s) that run(s) all the time in the background or does things they’re not supposed to. This section helps you find out which ones are the top drainers – and allows you to stop or delete them!

Step 8 – Free up space: Still struggling to store photos, music or apps on your phone? Then have a look at the last section, Free up space, to see which apps consume the most storage – and get rid of the ones you no longer want!

How much space were you able to free up? How many photos were cleaned up thanks to our new Smart Photo Cleaner? And how many performance-draining apps have you put an end to? Let us know in the comments section below.

If you’re looking for a quick clean-up of all of your unwanted photos, check out our newly re-launched Cleaner today for free!

Android security updates roll out to fight “Stagefright” type bug

Android Mediaserver vulnerability looks similar to the Stagefright bug.

Android-malware

Android mediaserver malware resembles Stagefright

Android owners may recall the Stagefright bug, the “worst ever Android vulnerability yet discovered”. That malware exposed a billion (that’s nearly every) Android device on the face of the earth to malware.

The latest critical bug has similarities to Stagefright, but exists in Android’s mediaserver. Google warns that an attacker could use the bug to remotely run malware hidden in video or audio.

In an announcement published in the Nexus Security Bulletin for January, Google said it has fixed 12 vulnerabilities affecting Android versions 4.4.4 to 6.0.1. Five are rated as critical security bugs. Partners were notified about and provided updates for the issues on December 7, 2015 or earlier, said the post.

“The most severe of these issues is a Critical security vulnerability that could enable remote code execution on an affected device through multiple methods such as email, web browsing, and MMS when processing media files.”

How to protect yourself from the Android bug

The good news is that Google says, “We have had no reports of active customer exploitation of these newly reported issues.” Because of enhancements in newer versions of the Android platform, exploitation for many issues on Android is made more difficult. Regardless, Google encourages all users to update to the latest version of Android where possible.

  1. 1. Don’t ignore updates from Android – when you receive a notification about an update, accept it, and upgrade to the latest version of Android.
  2. 2. Avoid opening video and audio files you receive via text or email. Delete all messages you get, without opening it first, from any sender you do not recognize.
  3. 3. We recommend users disable “auto retrieve MMS” within their default messaging app’s settings, as a precautionary measure for the moment. You can find detailed directions in the Avast FAQ.
  4. 4. Install Avast Mobile Security on your Android devices.

Follow Avast on Facebook, Twitter, YouTube e Google+ where we keep you updated on cybersecurity news every day.

 

Detox Your Messy Photo Gallery with AVG Cleaner for Android

It’s the start of a New Year, and it’s time to Detox! Try this now: Pick up your phone, open up your photos app, swipe through your gallery and look at how many bad or duplicated photos of your daily lunches, sunsets or the cat sticking its tongue out, you’ve been hoarding over the months, or even years. Surprised by how many there are?

Well, you’ll likely be as shocked at my results: 27 poor selfies; 230 nearly identical shots; 81 blurry images. That’s a total of 3 GB wasted in just 6 months of using my Galaxy S6. And if you’re as lazy as I am about sorting out a messy photo collection on a weekly basis, here’s something for you.

New AVG Cleaner for Android 3.0 with Smart Photo Cleaner

Our own AVG Cleaner for Android has helped millions of users clean up browser traces, hidden temporary app files, forgotten downloads, among other performance tools. But today, we’ve taken a massive leap to focus on one of – if not the – single most storage-hungry type of data: your photos.

Upgrade now to get Smart Photo Cleaner, which scans your entire photo gallery and allows you to identify & clean:

    • Similar photos: Since the dawn of digital photography, the practice of carefully framing and taking pictures are long gone. Now we take 5 photos of our lunch, but only post one to social media or send to our friends. Smart Photo Cleaner doesn’t just identify similar-looking photos, but also figures out the best ones from the group – and allows you to get rid of the rest!
    • Bad photos: AVG Cleaner for Android also knows which photos are under- or over-exposed and blurry, giving you an instant way to de-clutter your photo gallery. It analyzes various aspects of a photo, such as sharpness, color, and lighting, and gives you the choice of what to keep and what to get rid of.

  • Review photos: If our Smart Photo Cleaner isn’t 100% sure about a bad photo, it lets you review it. Swipe to the left to delete; swipe right to keep it!

Best of all, Smart Photo Cleaner gets smarter about your choices and will give you more personalized suggestions on which photos to keep or clean up. Keep an eye out for an upcoming post soon, explaining how Smart Photo Cleaner works and how to use it. And that’s not all…

One-Stop-View to Fix and Clean

AVG Cleaner has received a major redesign, a term which probably doesn’t do it justice. Let me explain:

See the big fat ANALYZE button in the middle? Hard to miss. One tap on it, and AVG Cleaner will identify all the top resource-draining apps, bad photos, wasteful junk files and battery-draining settings, on one, simple screen – and helps you instantly fix it all. Basically, you get all of AVG Cleaner’s key features on one screen; and as you scroll down, you see all the issues with your device, such as Cache files, history leftovers, low-battery warnings, bad photos or battery-hungry apps:

Tap on one tile to fix these issues. Here’s what’s behind them:

  • Cache Cleaner: Identifies and cleans hidden, unused files to free up lost space
  • History Cleaner: Identifies browser history and old call logs that can be deleted to get rid of users’ traces
  • App Manager: Identifies ‘resource hungry’ apps (as detailed in AVG’s latest App Performance & Trends Report) and helps users stop or delete them:
    • Running Apps: Shows running apps and how much RAM they’re consuming
    • Unused Apps: Identifies apps that you haven’t used in a long time
    • Data Usage, Battery Usage and Storage: Helps you spot the largest apps and the ones with the most battery and mobile traffic drain
  • Battery Manager: Helps you optimize battery life with one tap, or allows your phone to automatically turn off power-sapping features and settings based on where you are, such as at home, at work or in their car (“Battery Profiles”)
  • NEW Smart Photo Cleaner: As above, automatically identifies all of the poor quality and similar photos on the device and enables users to ‘clean’ them easily, to free up device storage
  • NEW One-Click Dashboard Overview: Provides a one-tap-analysis of the device’s status across performance, battery life and storage, helping users easily fix and clean top resource hogs, bad photos, and temporary files, all on one screen

If you’re looking for a quick clean-up of all of your unwanted photos, check out our newly re-launched Cleaner today for free!

Google 'Android N' Will Not Use Oracle's Java APIs

Google appears to be no longer using Java application programming interfaces (APIs) from Oracle in future versions of its Android mobile operating system, and switching to an open source alternative instead.

Google will be making use of OpenJDK – an open source version of Oracle’s Java Development Kit (JDK) – for future Android builds.

This was first highlighted by a “mysterious Android

Mutating mobile malware and advanced threats are on the horizon as we approach 2016

Bad guys know that people are moving their computing to mobile, so they are adapting

Bad guys know that people are moving their computing to mobile, so they are adapting

Yesterday, we walked you through a set of our 2016 predictions in regards to home router security, wearables and the Internet of Things. In addition to these important topics, mobile threats are not something that should be ignored as we move into 2016.

“Most people don’t realize that mobile platforms are not really all that safer or immune from attack then desktop platforms,” said Ondřej Vlček, COO of Avast. “Most people use mobile devices in a more naive way then they use a PC because they just don’t understand that this is a full blown computer that requires caution.”

 Hackers have done their homework to prepare for the new year

Over the course of this year, we’ve seen a list of notable mobile threats that jeopardized the privacy and security of individuals. Our own mobile malware analyst, Nikolaos Chrysaidos, has a few ideas about several issues that could crop up in the new year:

  • Android malware that can mutate. This superintelligent family of malware is capable of altering its internal structure with new and improved functions, changing its appearance, and if left unmonitored, spreading on a viral scale. And yes, this concept is just about as scary as it sounds.
  • More security vulnerabilities that can be exploited as a result of fuzzing. This year, there was a good amount of research on fuzzing, making it more and more of a familiar concept to both good and bad guys within the digital world. Fuzzing is a technique that is used to discover security loopholes in software by inputting massive amounts of data, or fuzz, into a system with the intent of overloading and crashing it. Next year, these vulnerabilities could look similar to Stagefright, the unique and dangerous vulnerabillity that, when exploited, left mobile devices vulnerable to spyware.
  • Smarter social engineering techniques. Now that most people know about certain vulnernabilities and their potential consequences, hackers can take advantage of this knowledge and use it to their advantage. For example, a hacker could trick users into installing their malware by telling them that an MMS is waiting for them but can’t be sent via text message due to risks associated with the Stagefright bug. Users are then prompted to click on a malicious download link. Although we could see more of these advancements in 2016, the concept isn’t completely new – this year, an example of this type of technique could be seen within OmniRat spy software.
  • APTs on mobile. In 2016, Advanced Persistent Threats (APTs) could be used to target politicians. This could be accomplished by using spyware (similar to Droidjack or OmniRat) in combination with specific social engineering techniques that could aid hackers in gaining access to powerful and influential individuals.

With this list of potential threats and risks in mind, it becomes clear that our mobile devices hold more value than just our apps and contacts. As hackers‘ techniques grow smarter, it’s important that we do the same in regards to the way that we approach our security.

Protect your Android devices with Avast Mobile Security. That and other apps like our new Wi-Fi Finder and Avast Cleanup & Boost are free from the Google Play Store.


 

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Find free, safe Wi-Fi hotspots with Avast’s new Wi-Fi Finder app

Avast Wi-Fi Finder helps you automatically connect to the nearest free Wi-Fi in your range

Avast Wi-Fi Finder helps you automatically connect to the nearest free Wi-Fi

Avast Wi-Fi Finder saves your data and roaming fees by locating safe and reliable connections.

Install Avast Wi-Fi Finder now on your Android device.

Everyone loves free Wi-Fi. You can surf the web, check your email or newsfeed, make Skype video calls across the world, or stream games, movies, and music – without eating up your data plan. That’s a great deal! Or is it?

The problem with free Wi-Fi hotspots is they can’t be trusted to be safe and keep your data secure. Cybercrooks can eavesdrop on your conversations and even break in to steal personal information.

When you need to find safe Wi-Fi, use Avast Wi-Fi Finder

Our new mobile app, Avast Wi-Fi Finder, lets you instantly search for available networks on the map or browse through a list. Wherever you are in the world, you can always find a safe connection, because after a successful beta test, we launched the app with nearly 800,000 networks in our database. The more people who use Avast Wi-Fi Finder, the bigger and better that database will become.

Avast Wi-Fi Finder also tests the speed of the network and performs our unique Wi-Fi security check. In case a vulnerability is found, you can easily protect yourself with the integrated app Avast SecureLine VPN (a small fee applies).

Android users: Learn more about Avast Wi-Fi Finder or visit the Google Play Store to download Avast Wi-Fi Finder. You can thank us by leaving +1s and 5-star ratings on the Play Store with a review to help the next person.


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