Ransomware is everywhere and cybercriminals are increasingly more antagonistic, demanding ever increasing ransom payments. Palo Alto Networks’ Unit 42 says that payments are up 82% in the first half of 2021, with an average payment amount at a record $570,000. But with ransoms increasing and cybercriminals ever hungry for users’ data, what can you do to stop these attacks?
Read moreAuthor: Justin
Justin Jett is Director of Audit and Compliance at Plixer with roles ranging from system administration of web services to technical product marketing for Plixer’s incident response system, Scrutinizer. Jett, a graduate of the University of Maine at Farmington, is an avid learner of all things security, with a particular interest in TLS and DNS attacks.
Why highly available monitoring is important to compliance
Many organizations carry a burdensome responsibility to various regulatory bodies like the Securities and Exchange Commission or the US Department of Health and Human Services. These bodies can levy heavy fines on businesses that fall out of compliance or can’t demonstrate that they complied with industry security standards. Among the many tools and platforms available to organizations, network traffic analytics—and more specifically, network detection and response (NDR) technology—has become a go-to solution used to help businesses demonstrate compliance.
Read moreHow to monitor VPN traffic
More and more people are working from home. Now, organizations need a way to understand the role a remote workforce plays in their network performance and security posture. Fortunately, with network traffic metadata, organizations can easily monitor VPN traffic, whether it’s through a split tunnel or no-split tunnel.
Read moreHow can data theft be prevented?
Corporate data theft is nothing new. In fact, according to a study conducted by McAfee, “[a] majority of IT professionals have experienced at least one data breach during their careers—61% at their current company and 48% at a previous company.” This is an alarming reality, but it’s one that we can understand better to prevent future data breaches.
Read moreProtecting your network from IoT peer-to-peer vulnerabilities
In a recent article on Dark Reading, it was revealed that millions of IoT devices were exposed to a peer-to-peer (P2P) vulnerability. Given how wide-spread IoT devices are, and how device adoption will continue in organizations, it is important to understand the nature of these devices and how organizations can prevent these vulnerabilities from becoming backdoors into the corporate network. Specifically, let’s take a look at how businesses can protect themselves from P2P and IoT vulnerabilities.
Creating a secure IoT environment
With global IoT product adoption continuing to grow, many organizations are trying to tackle the challenge of allowing these devices in while maintaining a strong security posture for the business. How businesses do this varies, but there is some good news for IoT aficionados who hope to deploy some new tech to make their jobs easier.
The dangers of IoT devices and what you should know
IoT devices are dangerous! Now, I know what you are thinking, “Justin, IoT devices provide convenience and make many mundane parts of life so much more interesting.” Consider, however, that many of the IoT devices on the market are designed with little care or interest in security. So, what should be considered before you bring a shiny new IoT device onto your network? Let’s explore.
IoT checklist—what to consider before you deploy
IoT devices are one of the most vulnerable devices that can be deployed on a network. They are usually put on the network as trusted devices, are rarely updated—if updates are even an option for the device—and are built to be deployed quickly, so security is often an afterthought. Because of this, IoT devices are extremely vulnerable to attack, and malicious actors love when IT professionals deploy them on corporate networks. After a short period, the devices remain without updates, and hackers exploit known vulnerabilities.
Because these devices are on the network, often with full access to many or all shared resources, the hackers begin their assault. The IoT devices have become the proverbial Trojan Horse, and the IT team has walked it right into the network.
When you are looking for a connected device that will solve a problem—let’s say connected locks that allow employees to use an app to gain access to a part of the building—you need to be certain of a few things. Namely, you need to understand if the devices are capable of firmware and software updates. Should a vulnerability be exposed, you need to have a way to update devices. Talk about the irony of your connected locks being the key to your entire network. Additionally, you must understand the security built into the devices. Are all communications over a secure, TLS channel? Does that encryption use industry standards with appropriate key sizes? While some of this information will be difficult to understand before purchase, it is certainly something you can find out by deploying a test device in a lab to understand the communications it has. This is an important step to understanding if deploying the device is relatively safe or if the device will become that Trojan horse.
Deployment guide
Okay, you now know how bad IoT devices are, and you understand that malicious actors will use these devices as much as possible to wreak havoc on your network. You also understand some of the security features built into the devices, and you want to deploy the device on the network. Now what?
IoT devices still should not be trusted. They need to be in isolation as much as possible, with only critical connections allowed. Additionally, they need to be monitored. Network traffic analytics is the best, first step to understanding what these devices are doing, and when they are compromised provides an effective way to find where hackers are trying to gain access. Network traffic analytics allows for scoring and monitoring of these devices at all times. According to Barracuda Networks, “IoT products should be scored constantly, and their security posture be published in the same way as motor vehicle safety ratings are, to enable businesses and consumers to make informed decisions when choosing products.”
To fully understand what your IoT devices are doing on your network, download a free trial of Scrutinizer today.
Securing the network from new devices
It’s that time of year again. Employees have gone away from the office to spend time with friends and family. They will, of course, return shortly in the new year, many of whom will have new devices that they will want to join the corporate network to stay connected. Many of these devices include smartphones, televisions, watches, phones, tablets, etc. The technology provides an exceptional level of convenience for the user, but it means that more information is being shared with third-parties, and new threat surfaces are being created as more devices are added. With these new devices, the security of the information they collect (and in fact the security of the devices) is not perfect. So, what can you do to make sure you secure your devices, data, and network? Let’s take a look! Read more
Securing your retail business during the holidays
With mere days until Hanukkah and less than a month before Christmas, retail organizations are starting to see a spike in online and in-store purchases. This is the “most wonderful time of the year” for retail because it means ending the year with a big boost in sales. However, this is also a time when malicious actors are interested in breaking into your network to steal the vast amount of customer data you’ve collected, or siphon the credit card information as it passes through your point-of-sale (POS) gateway. A new study from ACI Worldwide shows a projected fourteen percent increase in fraud attempts during the 2018 peak holiday season, and overall volumes of purchases are expected to rise 18 percent. With that in mind, what can you do to protect your retail business from malicious actors?
How to reduce your IoT threat surface
Recently, there has been an increase in distributed denial-of-service (DDoS) attacks that involve the use of compromised IoT devices like IP cameras, and it is extremely common today for organizations and consumers to purchase IoT devices. So how can organizations reduce the IoT threat surface that these devices bring, and how can they see what these devices are doing?
Reduce the number of IoT devices on your network
While this may sound like an obvious solution, it’s likely not something you’ve considered given the availability of these devices in the market. But have you considered alternatives, or have you considered abandoning the purchase all together? Sure, that IP camera setup is extremely easy and doesn’t require you to drill holes, but connecting it to your corporate Wi-Fi may not make the most sense. Many hardwired versions of popular IoT devices are available and can provide similar functionality without the added risk associated with them.
Isolate the devices
Okay, so you must have that IoT coffee bar with built-in voice control to create that perfect cappuccino in the morning. But you don’t have to add it to the corporate network to use its internet-enabled features. When you have a device that requires internet connectivity, deploy the device on a guest network instead of the main, corporate network. This setup will allow the device to connect to the internet for updates and to retrieve those updated macchiato recipes you so desperately desire, but will keep the devices from connecting to business-critical applications and wreaking havoc on your corporate assets. We know you must have your iced quad upside-down caramel macchiato with light ice, but let’s make that possible while reducing the threat surface.
Deploy devices with least privileges
So your coffee bar might be something you can get away with putting on a separate, isolated network, but some devices might require connecting to an application or server on the main network. Fret not; it is still possible to deploy the IoT device on the corporate network without adding too much risk (risk is always possible when deploying any device).
When deploying IoT devices on the main network, they should always be deployed with a least-privilege approach. This means that you will deploy the device on the network, but the device will be locked down from communicating to everything that isn’t absolutely required.
Imagine you are deploying a new IP camera system that connects to the internet to provide DVR-like functionality. This new system will likely have a central storage server (either on the local network or online) where the individual cameras connect. In this setup, the IoT system is very limited in its requirements. Specifically, the individual cameras only need to communicate to the local, internal server for storing the video, or a limited set of connections to the internet (a range of IP addresses or hostnames where the internet server is located). Because of this, you can fairly easily limit the communications from the cameras by creating an ACL for these IP cameras and allow connections to the limited number of devices required to record and store the necessary video effectively.
Monitor IoT devices for anomalous behavior
If you are going to deploy IoT devices on your network, you need to monitor the traffic that these devices are generating. While ACLs are an important step in a multi-layered approach to network security, you must have a way to detect and alert on breaches to these policies. When the IP camera starts to communicate to the mail server or attempts to access your financial documents, a red flag should immediately be raised because, after all, these devices are purpose-built and have no viable reason to communicate with these servers or applications.
By having the insight on these IoT devices, you can reduce your IoT threat surface while still maintaining the convenience and improved performance that these devices provide.
If you would like to learn more about monitoring IoT devices on your network and leveraging network traffic analytics to see when they are communicating with device unrelated to their function, download Scrutinizer today; our team will help you get set up.