6 ways to secure your mobile phone

It’s 2011 and there are now more phones in the world than computers. Every day, more of these phones become smartphones AKA portable computers. Unfortunately, if your phone can browse the web and check email, you will be targeted by some of the same  malicious attacks and scams that go after your PC.

Here are a few basic tips from the F-Secure Labs on how to secure your mobile phone.

  1. Keep your system updated
    An updated mobile operating system allows you to enjoy the latest and greatest features and while protecting your information. Get rid of security holes or vulnerabilities by maintaining updated software on both your PC and your smartphone.
  2. Install a security application
    As your mobile device functions more like a mini computer, it becomes a more attractive target for hackers or thieves. A reliable security app safeguards your data, protect against threats and locate your lost or stolen phone. Here’s a quick video about our F-Secure Mobile Security, in case you’re interested.
  3. Watch where you click and land
    The mobile threats you’re most likely to face are scams and phishing attacks that will attempt to steal credit card information. Social engineering methods would be used to lure you into clicking on malicious links. Always check to see if a website starts with “https” before you enter sensitive information.
  4. Avoid shopping or banking on a public network
    Keep in mind that the public Wi-Fi that your phone is connected to might not be secure. Limit your activity to browsing and avoid committing any transaction that involves your account information.
  5. Get applications from trusted source
    Part of the fun in having a smartphone is having an app for everything. There are plenty of applications out there, and some are offered through independent, unmonitored channels. Stick to app stores when you can. If you’re downloading an app from a third party, do a little research to make sure the app is reputable.
  6. Make it a habit to check each app’s data access on your phone
    Some applications may have access to your data or personal information. Be wary of the access that is outside of the scope or purpose of the applications. A game application doesn’t need access to SMS (read, write and send), calling, phonebook entries and system files. If game wants all the access, get a little suspicious. If you have any doubt about an application, do not install it.

Mobile security is a new concept for many people. So let us know what you want to know about the topic in the comments of this post.

Cheers,

Jason

CC image by Jacob Bøtter

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F2P can cost parents thousands of Euros – read this to avoid it

This is really an old problem, but it’s in the headlines again. Pokémon Go is yet another example of a “free” game with a business model based on in-app purchases. These games are also known as F2P, standing for free-to-play. You can start playing, and get hooked, for free. But soon you run into a situation where you can’t proceed without buying virtual stuff in the game. The stuff you buy is virtual but the payment is very real money. This is no doubt a profitable model. Pokémon Go went straight to the top and for example Finland-based Supercell, maker of Clash of Clans, has constantly reported nice profits. This can naturally cause trouble for addicted adults, but the real problems arise when kids get hooked. There are numerous public stories about kids making purchases for hundreds or even thousands of Euros, often without even understanding how much they have spent. And the sinister part is that this can go on for a while until you get the credit card bill, and it’s too late. Your chances to get a refund are somewhere between slim and none. But how can this happen? Let’s take a look at the most common scenarios. Your kid has set up the new device and created the needed account with Apple or Google. Everything is fine until he or she needs an app that isn’t free. You enter your credit card on the kid’s device and make the purchase, but you don’t pay any attention to the security settings. This may give your kid carte blanche to buy anything he or she likes, and you pay the bill. You have entered your credit card but set up the kid’s store account so that a password only you know is required for every purchase. But there are some convenient settings that allow purchases without a password within a limited time window after the password has been entered. Kids learn very quickly to utilize this opportunity. Let’s assume the same setup as in the previous point, but with the correct security settings. Now the password is needed for every purchase. But the store account is still owned by the kid and the password can be reset. The password reset link will be sent to the kid’s mail or phone number. It’s carte blanche again with the new password. Ok, you create an account you own for the kids phone. It’s tied to your mail and phone number, so the password reset trick shouldn’t work anymore. You put down your phone and head for the toilet. Your kid has been waiting for the opportunity and initiates the password reset request. Your phone is there on the table wide open, with the reset link in the mail. You can figure out the rest yourself. And of course the simple alternative. You think the store password on your kid’s device is secret. But in reality it is either too easy to guess or someone has been looking over your shoulder. So there’s many things that can go wrong, but what can we do to avoid it? There are many ways to fight this problem, but this is in my opinion the best approach: Let the kid set up the store account on the device and set own passwords. Just like an adult would use a phone, except that there’s no payment method registered. Never enter your credit card number on the kid’s device. On Android, get familiar with Google Play Family. This feature enables you to purchase stuff for your kid on your own device. On iPhone, send apps or money as gifts. There may be applications that bypass the store and handle credit card transactions directly. This can typically be handled with vouchers or other prepaid payment methods instead. The application usually guides the users and list all supported methods. Let’s also take a look at the hard way. Follow these instructions if you for some reasons must have your credit card registered as a payment method on the kid’s device. Make sure the store is protected with a good password that only you know. Make sure the kid isn’t watching too closely when you enter it. Make sure the store is set up to require the password every time a purchase is made. Make sure the store account is attached to an e-mail only you have access to. Make sure the e-mail password is decent and not known to your kid. Make sure your phone’s security settings are decent. Use a PIN or password your kid doesn’t know and make sure it locks automatically quickly enough. Even better, do not have the e-mail of your kids store account on your phone. Access it through web mail when needed. So this is after all a quite complex issue. There are many variations and other ways to deal with the problem. Did I miss some simple and clever way? Write a comment if you think I did. And finally. Yes, there’s also many ways to lock the kids out of the store completely. This does no doubt solve some problems, but I don’t think it’s a good idea. They will after all live their lives in a world where digital devices and services are as natural as breathing. They deserve the opportunity to start practicing for that right now. Let them browse the store and discover all the fun stuff. And be part of the group and use all the same apps as their friends. Let them have fun with the phone and learn, even if they will learn some things the hard way. Don’t ruin it for them.     Safe surfing, Micke  

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Yet another big vulnerability in the headlines. The Metaphor hack was discovered by Israel-based NorthBit and can be used to take control over almost any Android device. The vulnerability can be exploited from video files that people encounter when surfing the web. It affects all versions of Android except version 6, which is the latest major version also known as Marshmallow. But why is this such a big deal? Severe vulnerabilities are found all the time and we receive updates and patches to fix them. A fast update process is as a matter of fact a cyber security cornerstone. What makes this issue severe is that it affects Android, which to a large extent lack this cornerstone. Android devices are usually not upgraded to new major versions. Google is patching vulnerabilities, but these patches’ path to the devices is long and winding. Different vendors’ practices for patching varies a lot, and many devices will never receive any. This is really a big issue as Android’s smartphone market share is about 85% and growing! How is this possible? This underlines one of the fundamental differences between the Android and iOS ecosystems. Apple’s products are planned more like the computers we are used to. They are investments and will be maintained after purchase. iOS devices receive updates, and even major system upgrades, automatically and free of charge. And most users do install them. Great for the security. Android is a different cup of tea. These devices are mostly aimed at a cheaper market segment. They are built as consumables that will be replaced quite frequently. This is no doubt a reasonable and cost-saving strategy for the vendors. They can focus on making software work on the currently shipping devices and forget about legacy models. It helps keeping the price-point down. This leads to a situation where only 2,3% of the Android users are running Marshmallow, even half a year after release. The contrast against iOS is huge. iOS 9 has been on the market about the same time and already covers 79% of the user base. Apple reported a 50% coverage just five days after release! The Android strategy backfires when bugs like Metaphor are discovered. A swift and compete patch roll-out is the only viable response, but this is not available to all. This leaves many users with two bad options, to replace the phone or to take a risk and keep using the old one. Not good. One could think that this model is disappearing as we all grow more and more aware of the cyber threats. Nope, development actually goes in the opposite direction. Small connected devices, IoT-devices, are slowly creeping into our homes and lives. And the maintenance model for these is pretty much the same as for Android. They are cheap. They are not expected to last long, and the technology is developing so fast that you would be likely to replace them anyway even if they were built to last. And on top of that, their vendors are usually more experienced in developing hardware than software. All that together makes the IoT-revolution pretty scary. Even if IoT-hacking isn’t one of the ordinary citizen’s main concerns yet. So let’s once again repeat the tree fundamental commands for being secure on-line. Use common sense, keep your device patched and use a suitable security product. If you have a system that provides regular patches and updates, keep in mind that it is a valuable service that helps keeping you safe. But it is also worth pointing out that nothing as black and white. There are unfortunately also problematic update scenarios.   Safe surfing, Micke     Photo by etnyk under CC

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