The Best Portable Antivirus for 2019 and Why You Need It

08/03/2019     Author: Billy Gray

Protecting your computer from malware is essential if you want it to last for a long time. Check out these portable antivirus software to ward off threats.


Keeping your computer protected from malware will ensure that it lasts you a long time and functions properly. Malware can come in various forms, including viruses, adware, scamware, and more.

Most people will download some questionable apps, visit some naughty websites, and generally open things that they shouldn’t at some point on their computer. Once you do this, it’s easy for your computer to become infected. Sometimes you won’t even notice it until it’s too late.

It’s essential to have antivirus software installed, but some malware is designed to disable this. These are the really heavy malware that can render your device useless if they’re not dealt with quickly and efficiently. When it comes to these types of viruses, having a USB drive with a portable antivirus can mean the difference between having a computer and having a lump of inanimate plastic and wiring sat on your desk.

Why do you need portable antivirus?

You might be wondering why you’d need portable antivirus, given that you’ve already got antivirus installed on your computer. Thing is, some malware will evade this and then ultimately, disable it. If this happens, you’re pretty deep in the brown stuff. That’s when having portable antivirus can save the day, because the virus won’t be able to fight it.

Having a portable antivirus is like having a secret last line of defense that you hope you’ll never have to use, but that could save your computer’s life.

You can use it in conjunction with your antivirus software that you have installed on your computer and it works for the latest version of Windows.

The best portable antivirus for 2019

Now that you know why you should have a portable antivirus on a USB as a backup plan in the event of an uncontrolled attack. Let’s have a look at the best portable antivirus for 2019.


This is arguably the most effective portable antivirus software – so much so that you’ll likely end up deleting some files that aren’t even infected. This is the selling point of Norton Power Eraser – it’s utterly ruthless, will take no prisoners, and you can guarantee that your computer will be free of viruses once it’s done.

You don’t need to install this software to use it and it can run in safe mode. This means that you can use it even if your computer won’t start properly because of a virus.

Perhaps the only downside of this software is that it doesn’t run on Mac OS. It’s limited for Windows only. That being said, you can use it on pretty much any version of Windows you’re likely to be running. The cherry on top: it only takes up 2.9MB.


This is a great option – it’s free, open source, and it does the job better than most of the competition. It will uninstall in 10 days after you use it, meaning you need to reinstall it the next time you want to run a scan. This ensures that it always has the latest information about new forms of malware and thus can guarantee the most effective results.

It weighs in at a fairly heavy 136MB for installation (almost 100 times some of the other options), but it’s worth it if you want to ensure that your computer is always secure.


This is another free software from a reputable name that you can trust to protect your computer against the latest threats. McAfee GetSusp protects you by doing a ruthless scan of every inch of your device and comparing it all to the McAfee Global Threat Intelligence File Reputation database (mouthful, we know). From here, it can gather if anything it has found matches a suspicious file.

In this way, McAfee GetSusp does all the work for you – all you have to do is run it. What’s better, it comes in at a very reasonable 1.5MB of space. Easy.


This is another great option for removing viruses from your computer, even when you cannot start it normally. This one doesn’t require any installation – it runs directly from a USB. Comodo is very effective at targeting malware and removing it from infected devices.

Comodo comes with a kill switch that identifies and stops suspicious programs from running at their end-point. This saves you time in your scan and is a very effective way of removing malware from your device. It is also capable of detecting malware that activates right from starting your computer.

If you’re looking for a very accurate and effective way of removing malware that’s imbedded deep into your system, then this is a very good way of doing it. It takes up just 22MB, meaning that it can fit on any USB stick.


This portable antivirus software is very effective at targeting viruses on computers running Windows XP. It’s free and only 2.2MB to install. You can run it from a USB and it doesn’t require any installation to use.

Final note

I hope that this post has gotten you more clued up about why having a portable antivirus software on a USB drive is a great last line of defense against malware. You should hope that you never have to use it, but then, who knows? Better safe than sorry.

It’s recommended that you have at least one of these to scan your computer, but having more than one will ensure that you have much more effective results. Good luck.

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