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January 24, 2018 by Arlene

What is Meltdown and Spectre and How to Patch It

If you haven’t already heard about Meltdown and Spectre, it is a vulnerability that will affect almost every computer. If your tech is out of date, you are more likely to be affected. However, if you keep everything up to date, you will be fine. Below you can find some more details on the vulnerability and how you can protect yourself from Meltdown and Spectre Ubuntu and other operating systems are getting affected by.

What are Meltdown and Spectre?

These vulnerabilities are complex and to fully understand how they have come about, you will need to understand the process called speculative execution. This process is used by the chips in your tech to allow the processors to run as they should. In the simplest way, it basically guesses what might come next and work ahead in order to keep the process running smoothly. It is almost preparing the computer for the next task that might happen.

This is where Meltdown and Spectre come into play. They use the speculative execution to essentially do something it shouldn’t. The even scarier thing is that there are actually three vulnerabilities between them.

What Can They Be Used For?

The end goal of using these vulnerabilities would be to gain access to the target machine/machines.

Spectre would involve the use of a single program. The chosen program, most likely a web browser, would become compromised and then be used to access other programs.

The Meltdown vulnerability is one that allows attackers to gain access to the computer’s memory. However, it allows access to a part of the memory that is not meant to be accessible.

What Can You Do (Non-Ubuntu User)?

The main way of combatting these vulnerabilities is to keep your tech up to date. Companies are regularly pushing out updates that patch this kind of vulnerability.

Apple has recently released an iOS and MacOS patch that protects users against Meltdown and Spectre. Other companies have also released updates or alternatively, a way to patch the vulnerabilities yourself.

So, if you are sitting on an older version of Windows, Android, iOS etc. then it is a key requirement to update the machine as soon as possible to prevent your devices from being hacked.

How to Patch Meltdown and Spectre on Ubuntu

In some cases, you may have already run this patch already. However, it is always good to check so in person. This is how you check:

Run the following command:

grep –i isolation /var/log/kern.log

If you receive an output similar to the following, the vulnerability has been patched:

[0.000000]! Kernel/User page tables isolation: enabled

If you have run the grep command and you have failed to find the output similar to the one above, you will have to update the system manually using the steps below:

Run the following commands in order:

sudo apt-get update

sudo apt-get install linux-generic intel-microcode

After running these, you will need to reboot the server:

sudo shutdown –r now

After your machine has booted back up, run the next command:

dmesg | grep “kernel/user page tables isolation: enabled”

Now that you have run the above commands, you should receive an output similar to the one mentioned above. Your Ubuntu machine will now be updated, and the vulnerabilities will be patched.

Vulnerabilities that can gain access to the machine’s core are scary. You wouldn’t expect it to be possible, but every day new bugs are being found and used to gain access to machines etc. However, keeping up to date will prevent the possibility of being hacked.

Filed Under: Tech Tagged With: computer, internet, Meltdown and Spectre, online, tech

March 9, 2017 by Arlene

Best Ways Of Making Some Great Cash Online

Source

Have you been wondering what the best ways to make money online are? Maybe you have recently been made redundant or have had your hours cut and you’re looking to make some side cash while you’re waiting for work to pick up again or for that job interview to get back to you, then this could be the answer you’ve been waiting for!

Buying and Selling Domain Names

Buying and selling domain names can be a pretty lucrative business. Websites that have the best value are those which provide information as well as a type of service. Think in terms of those price comparison websites – you can usually buy direct through them for the best rates – information and service and some of those websites have gone for hundreds of thousands if not millions.

Freelance or Tutor Online

Are you a keen programmer? An English teacher? Have knowledge, experience or a skill in another area from graphic design to personal assistant type stuff? You can freelance in all these kinds of things online really easily and without much hassle through some online freelancing sites like Upwork or People Per Hour. Some people make their own entire wages through freelancing and it’s becoming a huge market for people looking to spend an extra hour or two per day helping others with their skills to make a bit of side cash. An added benefit is that you can even teach English to people via Skype on a private one to one basis, so you don’t even need to be in the same region as your clients.

Mystery Shopping

This can be done in a number of different places: cities, countries and various businesses around the world all employ Mystery Shopping to help boost the customer experience. Mystery Shopping can be done with mobile apps in many different locales around the world as well, making it even easier. Some don’t even need you to be in the area to shop and you just need to complete various online tasks to rack up the money. Pretty easy, and easy to do if you sign up to numerous ones that don’t require you to physically go shopping at a local shop.

Playing Online Casino Games

Want to make money and have fun? Why not do both with some of the best online casino games around. With many nowadays offering risk-free bonuses for signing up and even free money to play when you first join, what could be better? Check out the highest wins with no deposit online casino in the UK and get playing today!

So there you have a couple great ways to make some quick cash online with little to no risk on your part but some big wins and big money to be made. Are you going to be able to retire with making money online? Probably not, but at least you won’t be scraping together change for the milk at the end of the month! So check out the above today and see how you can start making some extra money to save for that snazzy new pair of boots, a new tattoo or even pay off some of your dreaded debts! Enjoy!

Filed Under: Business Tagged With: cash, fast cash, making money, online, travel

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About Seek Your Trip

Here at Seek Your Trip, we post twice-weekly articles that will get your travel juices flowing. The idea is to inspire you to get out there and explore far-flung places and unusual cultures.