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Ransomware. Even the name sounds scary.
When you get down to it, ransomware is one of the nastiest attacks a hacker can wage. They target some of our most important and precious things—our files, our photos, and the information stored on our devices. Think about suddenly losing access to all of them and being forced to pay a ransom to get access back. Worse yet, paying the ransom is no guarantee the hacker will return them.
That’s what a ransomware attack does. Broadly speaking, it’s a type of malware that infects a network or a device and then typically encrypts the files, data, and apps stored on it, digitally scrambling them so the proper owners can’t access them. Only a digital key can unlock them—one that the hacker holds.
Nasty for sure, yet you can take several steps that can greatly reduce the risk of it happening to you. Our recently published Ransomware Security Guide breaks them down for you, and in this blog we’ll look at a few reasons why ransomware protection is so vital.
The short answer is pretty bad—to the tune of billions of dollars stolen from victims each year. Ransomware targets people and their families just as explained above. Yet it also targets large organizations, governments, and even companies that run critical stretches of energy infrastructure and the food supply chain. Accordingly, the ransom amounts for these victims climb into millions of dollars.
A few recent cases of large-scale ransomware attacks include:
Who’s behind such attacks? Given the scope and scale of them, it’s often organized hacking groups. Put simply, these are big heists. It demands expertise to pull them off, not to mention further expertise to transfer large sums of cryptocurrency in ways that cover the hackers’ tracks.
As for ransomware attacks on people and their families, the individual dollar amounts of an attack are far lower, typically in the hundreds of dollars. Again, the culprits behind them may be large hacking groups that cast a wider net for individual victims, where hundreds of successful attacks at hundreds of dollars each quickly add up. One example: a hacker group that posed as a government agency and as a major retailer, which mailed out thousands of USB drives infected with malware.
Other ransomware hackers who target people and families are far less sophisticated. Small-time hackers and hacking groups can find the tools they need to conduct such attacks by shopping on the dark web, where ransomware is available for sale or for lease as a service (Ransomware as a Service, or RaaS). In effect, near-amateur hackers can grab a ready-to-deploy attack right off the shelf.
Taken together, hackers will level a ransomware attack at practically anyone or any organization—making it everyone’s concern.
Hackers have several ways of getting ransomware onto one of your devices. Like any other type of malware, it can infect your device via a phishing link or a bogus attachment. It can also end up there by downloading apps from questionable app stores, with a stolen or hacked password, or through an outdated device or network router with poor security measures in place. And as mentioned above, infected storage devices provide another avenue.
Social engineering attacks enter the mix as well, where the hacker poses as someone the victim knows and gets the victim to either download malware or provide the hacker access to an otherwise password-protected device, app, or network.
And yes, ransomware can end up on smartphones as well.
While not a prevalent as other types of malware attacks, smartphone ransomware can encrypt files, photos, and the like on a smartphone, just as it can on computers and networks. Yet other forms of mobile ransomware don’t have to encrypt data to make the phone unusable. The “Lockerpin” ransomware that has struck some Android devices in the past would change the PIN number that locked the phone. Other forms of mobile ransomware paste a window over the phone’s apps, making them unusable without decrypting the ransomware.
Part of avoiding ransomware involves reducing human error—keeping a watchful eye open for those spammy links, malicious downloads, bogus emails, and basically keeping your apps and devices up to date so that they have the latest security measures in place. The remainder relies on a good dose of prevention.
Our Ransomware Security Guide provides a checklist for both.
It gets into the details of what ransomware looks like and how it works, followed by the straightforward things you can do to prevent it, along with the steps to take if the unfortunate ends up happening to you or someone you know.
Ransomware is one of the nastiest attacks going because it targets our files, photos, and information, things we don’t know where we’d be without. Yet it’s good to know you can indeed lower your risk with a few relatively simple steps. Once you have them in place, chances are a good feeling will come over you, the one that comes with knowing you’ve protected what’s precious and important to you.
The post Your Guide to Ransomware—and Preventing It Too appeared first on McAfee Blog.
Whether you think you might have a virus on your computer or devices, or just want to keep them running smoothly, it’s easy to do a virus scan. How to check for viruses depends on the software and device you have, so we’ll go through everything you need to know to run a scan effectively and keep your computers, phones and tablets in tip-top shape.
First, let’s cover a few of the telltale signs your device might have a virus. Is your computer or device acting sluggish or having a hard time booting up? Have you noticed missing files or a lack of storage space? Have you noticed emails or messages sent from your account that you did not write? Perhaps you’ve noticed changes to your browser homepage or settings? Or maybe, you’re seeing unexpected pop-up windows, or experiencing crashes and other program errors. These are all examples of signs that you may have a virus, but don’t get too worried yet, because many of these issues can be resolved with a virus scan.
Each antivirus program works a little differently, but in general the software will look for known malware that meets a specific set of characteristics. It may also look for variants of these known threats that have a similar code base. Some antivirus software even checks for suspicious behavior. If the software comes across a dangerous program or piece of code, it removes it. In some cases, a dangerous program can be replaced with a clean one from the manufacturer.
The process of checking for viruses depends on the device type and its operating system. Check out these tips to help you scan your computers, phones and tablets.
If you use Windows 10, go into “Settings” and look for the “Updates & Security” tab. From there you can locate a “Scan Now” button.
Of course, many people have invested in more robust antivirus software that has a high accuracy rate and causes less drain on their system resources, such as McAfee Total Protection. To learn how to run a virus scan using your particular antivirus software, search the software’s help menu or look online for instructions.
Mac computers don’t have a built-in antivirus program, so you will have to download security software to do a virus scan. There are some free antivirus applications available online, but we recommend investing in trusted software that can protect you from a variety of threats. Downloading free software and free online virus scans can be risky, since cybercriminals know that this is a good way to spread malware.
Whichever program you choose, follow their step-by-step instructions on how to perform a virus scan, either by searching under “help” or looking it up on their website.
Yes, you can get a virus on your phone or tablet, although they are less common than on computers. However, the wider category of mobile malware is on the rise and your device can get infected if you download a risky app, click on an attachment in a text message, visit a dangerous webpage, or connect to another device that has malware on it.
Fortunately, you can protect your devices with mobile security software. It doesn’t usually come installed, so you will have to download an application and follow the instructions.
Because the Android platform is an open operating system, there are a number of antivirus products for Android devices, that allows you to do a virus scan.
Apple devices are a little different because they have a closed operating system that doesn’t allow third parties to see their code. Although Apple has taken other security precautions to reduce malware risks, such as only allowing the installation of apps from Apple’s official app store, these measures aren’t the same as an antivirus program.
For more robust protection on your Apple devices, you can install mobile security software to protect the private data you have stored on your phone or tablet, such as contacts, photos and messages.
If safeguarding all your computers and devices individually sounds overwhelming, you can opt for a comprehensive security product that protects computers, smartphones and tablets from a central control center, making virus prevention a breeze.
New online threats emerge every day, putting our personal information, money and devices at risk. In the first quarter of 2019 alone McAfee detected 504 new threats per minute, as cybercriminals employed new tactics. That’s why it is essential to stay ahead of these threats by using security software that is constantly monitoring and checking for new known threats, while safeguarding all of your sensitive information. Virus scans are an essential part of this process when it comes to identifying and removing dangerous code.
Most antivirus products are regularly scanning your computer or device in the background, so you will only need to start a manual scan if you notice something suspicious, like crashes or excessive pop-ups. You can also program regular scans on your schedule.
Of course, the best protection is to avoid getting infected in the first place. Here are a few smart tips to sidestep viruses and other malware:
The post How To Do A Virus Scan appeared first on McAfee Blog.
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