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Higher Education Organization Improves Cybersecurity Posture with NodeZero

16 November 2022 at 20:18

When the director of technology for a higher education organization went looking for a better way to identify and prioritize security weaknesses on the school’s servers and networks, his first interaction with and NodeZero started off with an impressive bang.

“I wanted to see proof of concept, and solved one of our biggest security holes because of that PoC,” or proof of concept, he says. On the first op, NodeZero was able to compromise the domain admin account.
Not just one account, in fact, but four, via an LLMNR vulnerability.

Without a lot of work, we were able to clean that up before we even licensed NodeZero – that was huge,
says their IT director.

Cybersecurity presents a complex challenge for the school, as it is spread out over several campuses and managed remotely. The director of technology is their highest-ranking technology staff member at the organization. The role oversees 400 endpoints within the organization, in addition to securing roughly 600 students on their own VLAN/Subnet during the school year.

NodeZero offers more specificity

Previous pentesting options were helpful, but often left the team chasing down vulnerabilities that turned out to not actually be exploitable.

“Often, it was just informational, and didn’t really affect your security,” he says.

With, “One of the things that really struck me was that it isn’t just the tool – and the tool is fantastic – but it’s the people around the tool who are available, in the chat, scheduling meetings. When I was running the PoV (Proof of Value) someone was there.”

He was also sold on NodeZero by its capability to run on demand.

“What sold me on it was seeing it at work and, because we know security is a journey and not a destination, the idea of being able to continuously run scans and pentests is great,” he says.

The team now runs weekly pentests to maintain vigilant cybersecurity on their network, he notes.

Getting the most from your time

Time management and focusing effort is huge in maintaining a strong security posture. Chasing down every lead with equal time and energy isn’t helpful when we know that not every vulnerability is actionable.

“You have critical down to informational severity issues, but I believe a tool a lot more when it says this is a critical misconfiguration we have compromised – oh and by the way, here’s your hashed password,” he says. “When that’s happened, I recognized the first and last character and knew that was the password.”

Context scoring based on critical impacts helps hammer home where to best deploy limited resources to secure
the environment.

“It’s the difference between casing a house and saying how I might be able to break in – that window might not be locked, that door doesn’t seem secure. But if you can actually break in, that’s critical. It’s the difference between telling me something might happen versus something did happen.”

Easy fixes but you need to find them first

While the LLMNR vulnerability wasn’t a huge challenge to fix, discovering it was a bit of a shock, the Director of Technology explains – and that’s why regular tests are so helpful. Security is so expansive it’s hard to cover everything.

“We try to work to secure our network, but it’s possible for any organization to miss things or have little holes” in their security, he says. A solution like NodeZero can find those small gaps that leave the organization open to risks so the team can shore them up quickly and easily.

“With stuff like LLMNR, the fix isn’t hard if you have the tools to fix a lot of machines at once,” he says. It’s identifying those risks in the grander picture that is the real struggle.
NodeZero helps uncover what you don’t know, he says, and tells you how to fix it so you don’t spend time researching the answer.

“You’re not chasing your tail following a large list of vulnerabilities,” he says. “It cuts down the task of securing your network because you’re starting at the critical, most impactful things. You get a view of things you just aren’t going to have without a pentest.”

Since starting to incorporate NodeZero into their security profile, other features, such as external pentesting, have been released and added to the solution’s usefulness.

“There’s a lot of tools out there that just hand you the tool and you’re on your own,” he says.

“The support, being able to set up a time to answer a question, it’s all been helpful. They work with us as opposed to saying ‘We got ‘em, on to the next account.’”

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Vulnerable ≠ Exploitable: A lesson on prioritization

13 September 2022 at 15:17

The Typical Approach

Pen testers, vulnerability scanners, and installed agents alert on potential vulnerabilities and breaches. You receive a list, or a notification, and you respond. Ever wonder how much of your time and effort is being wasted fixing things that don’t actually matter?

You may be surprised to hear that a large majority of all vulnerabilities are unexploitable. According to data compiled by Kenna, in 2020, only 2.7% of the vulnerabilities found appeared to be exploitable and only 0.4% of those vulnerabilities were actually observed to be exploited at all.

The prioritization of these low-risk or no-risk vulnerabilities alongside, or even above, the truly exploitable vulnerabilities can actually cause an organization’s security posture to suffer. It takes significant time and coordination to find the asset owners, bring them up to speed on the issue, prepare downtime for the asset, remediate the issue, and then confirm that the issue is remediated. Meanwhile, more critical vulnerabilities are waiting in line for their turn to be remediated. If you can’t properly prioritize, you will never secure your network.

A client came to with the goal of validating the services they were using for pentesting, vulnerability scanning and remediation. Their IT services had all been outsourced to a managed security service provider (MSSP) with a hefty price tag; they wanted to make sure they were getting what they paid for.

The MSSP had just conducted their annual pentest of the organization’s network environment. used NodeZero to assess the organization’s network, with the following comparative results:

Why Coverage and Accuracy Matter

The hardest part of cyber security is deciding what NOT to fix because of limited time and resources.

Manual Pen Testing creates an incomplete snapshot:

  • No exploits exist, or conditions to exploit are extrememly unlikely, for 22/28 of the MSSP’s critical findings
  • Poor enumeration leads to blind spots and incomplete fingerprinting – port scans are not enough!
  • Partial coverage leads to missed critical findings

Fixing 79% of the critical issues highlighted in the MSSP’s report would have been an inefficient use of time and effort. These so-called “critical issues” did not have exploits, were blindly assumed due to poor enumeration, or the conditions for exploitability were extremely unlikely.

Meanwhile, the MSSP’s team only identified one host vulnerable to BlueKeep, while NodeZero found an additional 11. NodeZero also proved three additional critical/high weaknesses, including easily guessable root access to a database server.

When the noise is removed, the critical findings are revealed.

The Difference

Thinking like an attacker gives you a distinct advantage as you devise a defensive strategy.

The attacker’s perspective asks:

  • What is an attacker interested in doing or achieving?
  • What methods are realistically at their disposal?
  • What things about your environment makes achieving their intentions possible, or even easy?

We believe that these questions can only be answered by an “attacker-mindset” pentest, which should be performed frequently on your entire environment so risks do not accrue, and should produce findings that guide your remediation actions with a heavy bias towards efficiency and return on investment. delivers these outcomes through NodeZero, our autonomous penetration testing-as-a-service (APTaaS) platform. NodeZero is an on-demand, self-service platform that is safe to run in production and requires no persistent or credentialed agents.

Within our Portal, we provide the following supporting information for every weakness NodeZero finds:

  • Path NodeZero followed to identify/discover the weakness.
  • Proof of exploitability of the weakness.
  • Context and severity of the finding, which can be used to determine business impact.
  • Fix action report you can follow to remediate the weaknesses.

The Future State

Overall, the comparison between the MSSP’s report and the NodeZero report shows that NodeZero provides broader coverage, proves exploitability, contextualizes weaknesses, and provides the defensive team with the information they need to fix what matters.

Our work with this client exemplifies the need for a proactive security posture that includes continuous assessment, so you can catch up, keep up and even stay ahead.

Catch Up

Identify exploitable attack paths that must be fixed immediately, significantly reducing the opportunities for exploitation, sensitive data exposure, elevated privileges or remote code execution.

Your first NodeZero operation will provide this insight and minimize the time spent dealing with false positives.

For me, the biggest benefit is the attack path identification and actual prioritization of the vulnerabilities. Other tools simply pull the CVE value, and we get hundreds of criticals and highs.

Keep Up

Establish a purple team culture to find exploitable problems, fix them and then verify that the problems no longer exist. Your red team should be working with your blue team to maximize coordination.

You can run multiple NodeZero operations per week – our licenses give you unlimited access.
Use NodeZero’s compare feature to power your security standups.

Stay Ahead

Continuously verify your security controls – tools, processes, policies – by measuring and optimizing your detection, remediation and compliance response times.

Use our reports to show your leadership and board where you stand. Not just a compliance checkbox; this is effective security.

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Patched ≠ Remediated: Healthcare Faces an Aggressive Threat Landscape

12 September 2022 at 16:23

Healthcare Data Breaches Bar Chart

The Challenge: Healthcare Faces an Aggressive Threat Landscape.

One of our clients, a leading U.S. hospital and healthcare system, consistently earns high marks for clinical excellence and is among the top 10 percent in the nation for patient safety. Recognizing the growing cybersecurity threats to healthcare organizations and importance of importance of maintaining compliance with regulatory standards like HIPAA, PCI, and other privacy rules, the organization’s IT staff worked hard to ensure a strong security posture.

Our client’s IT team had adopted many security best practices and tools, including state-of-the-art firewalls, vulnerability scanning, endpoint detection and response (EDR), automated patch management, network segmentation, and a managed security service provider (MSSP). In addition, the team began implementing a zero-trust architecture and has tools to monitor the many specialized medical devices on its hospital networks.

Even with these comprehensive security practices in place, the team wanted to do more. Hackers have increasingly targeted the healthcare industry. In 2020, over 600 data breaches of 500 or more patient records were reported. Ransomware attacks continue to be extensively used against healthcare organizations, and these attacks are becoming more costly.

The Solution: NodeZero™ Automated Red Teaming

Liberman Networks, a managed security and IT services company, recognized that even with their many controls implemented, our client could still be vulnerable to an attack.
Liberman Networks called on to help validate our client’s defenses and provide proof of what was truly effective and which deficiencies remained.

Our client used’s NodeZero – a fully autonomous SaaS offering that views the network from the attacker’s perspective – to conduct a comprehensive penetration test across its enterprise. In a matter of minutes and with virtually no configuration, NodeZero began its reconnaissance, mapping the organization’s infrastructure and over 8,400 hosts, probing for misconfigurations, open ports, and other vulnerabilities an attacker could exploit, whether alone or by chaining multiple weaknesses.
Patched does not equal Remediated Attack Path

The Findings: Unauthenticated Access to Domain Controller’s

NodeZero ran for eight days with no adverse impact to the network.

NodeZero identified 31 vulnerabilities with 278 unique attack paths, proofs for each, and remediation guidance.

The most significant and surprising finding was immediately communicated to our client by Liberman Networks – even before NodeZero completed its testing. Ten Microsoft Active Directory domain controllers included ZeroLogon – a “critical” and potentially catastrophic privilege escalation vulnerability allowing unauthenticated accesses to devices first disclosed a year prior to the NodeZero test. Worse, an exploit was publicly available, making the vulnerability an easy target. Had attackers targeted the vulnerable hosts they could have quickly created their own credentials and gained unfettered access to every system in the organization. The result could include stealing patient information and financial data or installing ransomware on our client’s endpoints and databases.

Patched does not equal Remediated Findings Stats

“We patched this back in February. All of our reporting shows it as patched.” — Director of Infrastructure

Lesson 1: Reporting Tools Can Lie.

At first, our client believed NodeZero was in error. They were diligent in their patching and their records showed a successful update for the ZeroLogon vulnerability months earlier. Our client also had evidence; reporting from Qualys and Microsoft Deployment Image Servicing and Management (DISM) showed all systems were patched, and they trusted their tools.

In this case trusting the tools was a mistake. Liberman Networks and’s customer success team investigated further and confirmed that the updates had been unsuccessful. When our client reapplied patches to the 10 servers, a subsequent test by Liberman Networks and showed that 4 of the 10 devices remained vulnerable – despite showing as patched – again – in Microsoft.

A security solution blocked security updates for 18 months.

After further analysis, our client found the problem; a misconfiguration in their EDR solution had blocked patches on the domain controllers for the past 18 months! The failures were not propagated back to the patch management system, resulting in their vulnerability management and monitoring tools to incorrectly report a successful patch install. After manually pushing patches to each domain controller NodeZero was quickly re-run, proving that the problem had truly
been remediated.

“This is a good experience for me to teach the team the importance of credential use and reuse. We never would have found this vulnerability without NodeZero.” — Director of Infrastructure

Patched does not equal Remediated Timeline

Lesson 2: Patching ≠ Remediation

The lesson our client learned was simple; patching is not the same as remediating. Our client followed standard best practices in the defenses. They tracked security updates to their systems, promptly patched for critical issues using industry-leading tools and verified the patches using Microsoft DISM. As they saw, the tools can be wrong, leaving organizations vulnerable to attacks.

With assistance from and Liberman Networks, our client’s IT staff improved their security profile and their internal in monitoring, detection, and response skills. The IT team’s increased knowledge and confidence is generating greater trust in IT by the business. By using an offensive strategy to test its defenses, the healthcare system is evolving its cybersecurity posture to match the threat landscape that it faces.

Lesson 3: Follow Patch Tuesday with Pentest Wednesday.

According to the NIST Cyber Security Framework, organizations should validate through systematic audit and assessment that they have truly fixed vulnerabilities after deploying patches. In reality, most IT teams lack the resources to do penetration testing after every patch.

After their experience with misreported patching – with proof from Liberman Networks and NodeZero – our client added a step to “Patch Tuesday”: “Pentest Wednesday” with NodeZero to validate all patches are correctly implemented and risks are mitigated.

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Healthcare Staffing Organization Puts Cybersecurity Best Practices in Place with NodeZero

31 August 2022 at 15:29

The director of security engineering at a national healthcare staffing organization grew up wanting to be a hacker, and he found that NodeZero’s ability to provide the attacker’s perspective to help better protect his organization was a perfect fit for keeping his organization safe.

“Security has always been on my mind. Protecting company assets have always been on my mind. We’d reached a point where our organization is big enough, people are working remotely, and I wanted to split off some of my roles and be ultimately dedicated to security,” he says.

One of the challenges he has faced over the years has been convincing the c-suite to focus on security. They always had compliance in mind and policies in place, but the organization struggles with aging software without a development cycle or vendors who didn’t support software when it aged out or broke down.

As a publicly traded company, they ran their annual penetration tests on their roughly 900-1,200 hosts and performed well – they had a strong firewall in place protecting them from outside threats.

“But we have ancient software inside, and one of the great things about NodeZero is that it’s internally focused. In my mind, that’s where the threats will come from,” he says.

The first time he ran NodeZero, it was able to obtain domain admin access in 17 minutes via an overlooked machine that shared a password with other machines. It also surfaced risks and vulnerabilities that those aging machines and systems internally may have otherwise made difficult to find.

“We have folks, who have come and gone, who may have built servers I’m not aware of, that we don’t know about until NodeZero finds them, finds the misconfigurations, and helps us remediate them,” he says.

Immediate, Actionable Results

Before NodeZero, the organization would run one external pentest and one scan to check on their remediation actions.

The pentest would, regardless of vendor, use the same tools.

“You get a PDF telling your execs how you suck, and 99 percent of the stuff that says you suck are things that are such low priority you don’t care about them,” he says. “I love that with NodeZero, those are identified as low-priority, such as expired SSL certs, very minor things.”

Because other options all felt cookie cutter, with no difference in quality, leadership simply wanted the cheapest, easiest option to check that box. Cost was always a struggle – with security being seen as an annoying expense – until a key leader re-joined the company having survived a ransomware attack with his previous organization who now had security at top of mind.

“He asked, what are you missing? I told him endpoint protection, and we had the contract signed the next day,” he says.

When it came time for addressing pentesting, there was some pushback between the dev and infrastructure teams, but once they ran a demo of NodeZero, the teams fell in line.

I showed the demo to our network guy, who’s as big a cynic as I am and he was blown away, saying ‘this is what we need,’” he says.

This was all happening right around the time the Log4Shell vulnerability was the talk of the cybersecurity world.

“Log4j was everywhere,” he says, but running NodeZero offered actionable mitigation right away, whereas other tools they were using at the time had a lag time of weeks.

From Once a Year to Once a Month

The organization now runs NodeZero once a month, and then retests mid-month. With NodeZero they’re able to show progress better than ever before.

“Audit and compliance guys would look at the number of vulnerabilities in a 90-day period and say the numbers have gone up, you haven’t fixed anything,” he says. “But we’re able to show them that these are new weaknesses, and that new vulnerabilities come up all the time. We’re not being measured against those 90 days, and we can compare in the middle of the month to see what’s been fixed.”

In fact, with NodeZero running, the only issues his team has not fixed are due to manpower, not because of testing.

“Honestly, anything that hasn’t been addressed is a resource issue on our side,” he explained.

And, NodeZero has helped improve their results from other tools and resources. They were able to improve notification of attacks from their MSSP from four hours to fifteen minutes and validated their endpoint protection by verifying that the pentests are immediately detected and alerts issued – all enabling them to get more out of existing expenditures.

NodeZero has improved their overall accuracy, such as identifying a false positive that came up time and time again with Adobe Flash that was no longer being used but could not be removed from some older machines.

Doing Things Other Vendors Don’t

“I don’t think you have any other competitors,” he says. “I’d a have to go out and get a red team to do what NodeZero does, and it would cost twice as much for one scan.”

He also appreciates that NodeZero doesn’t just stop when it finds a vulnerability – it keeps digging. “It chains attacks, which other pentesters don’t do,” he says. “Hackers don’t say hey, I got access to this, I’ll stop here. That’s not how they operate.”

As a once-aspiring hacker himself, their director of security engineering knows that anyone who says they are 100% secure is either dishonest or naïve.

“You are going to get breached. It’s going to happen,” he says. “But the more you understand, the better you can lock things down and limit the blast radius.”

If you’d like to see how NodeZero works with your organization, have our experts walk you through a demo.

Download the PDF version

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An International Look at Cybercrime

29 August 2022 at 15:19

Authoritarian regimes have learned in recent years that cybercrime can be a profitable economic enterprise ­– so much so that they continue to invest substantial resources in large- and small-scale cybercrime. This lucrative work goes on to fund their governments and their lavish lifestyles, among other things.

These nefarious nation state actors – North Korea, Iran, Russia, and China – all steal large sums of money by targeting Western infrastructure, private and public organizations, and sometimes even outspoken entities that speak openly against each of them. Furthermore, these nation state actors have long seen the West as an existential threat on the global stage for a multitude of reasons, especially in the realms of economy, infrastructure, intelligence and military affairs.

Economically, the battle between communism and capitalistic agendas rages on, with stiff competition between Eastern and Western technology, energy, manufacturing, and more For example, China uses its global Belt and Road initiative (BRI) under the guise of helping struggling economies to gain influence and essentially creating debt traps for unsuspecting countries. Meanwhile, maritime power has reemerged as a vehicle for control and asserting dominance over disputed territories (referring to China’s ambitions for Taiwan and controlling the parts of the Pacific, so far, an icy stalemate). Conflicts are also being fought on land, as seen with Russia’s invasion of Ukraine and Iran’s continued tensions with Israel and the U.S. regarding their nuclear agenda.

The Link Between Cybersecurity and Geopolitics

With this gradual increase in global cyber competition, it is no wonder that nation states continue to invest in cyber infrastructure and predominantly fight in the cyber world. Many are correct to believe that cybersecurity and geopolitics are directly linked. If anything, businesses have learned this lesson the hard way. Just because they are private sector and a multinational organization does not mean they are invincible to an enemy nation’s ransomware and cyberattacks. Or better yet, a private business operating abroad becomes a target for spyware (China BRI and cyber giant Huawei) out of the suspicion they are harboring their home country’s government secrets and hold “the keys to the castle.”

Overall, despite a nation state’s obvious agenda for zeroing in on military and government targets, such adversaries have become bolder and less dismissive of attacking private businesses, regardless of that company’s allegiance to serving consumers internationally. For example: As of late, many have pointed fingers at Russia to blame for recent attacks on American companies as big as Microsoft, Apple, Cisco (etc.) as well as being the true culprits of the SolarWinds fiasco in 2020.

As Dangerous as the Wild West

Due to such actions, the cyber world is now as dangerous as the Wild West. The question is, how are businesses and everyday citizens supposed to live while being caught in the chaotic influx of criminalistic and outlaw-ish rivalry?

The answer is: They do not. Cybersecurity has become a constant in daily life, and enemy nation states are part of the reason why. Every day, another business is on the news because it has been hacked by foreign threat actors who, with sophisticated and unsophisticated techniques, manage to destroy the finances, ambitions, and public reputation of a once-respected economic contributor.

Looking back to 10 years ago, it would be hard to believe then believe that extraordinary measures (such as firewalls, multi-factor authentication, intrusion detection and prevention systems, etc.) would now need to be implemented to defend against malicious advanced persistent threats (APTs). However, business today means realizing that nobody is safe. It does not matter anymore what industry an organization belongs to or what product they peddle.

Unfortunately, businesses across the globe are not safe from APTS, regardless of industry, sector or affiliation. APTS tactics techniques and procedures (TTPs) continue to advance, and so should business TTPs when protecting against threats.

Therefore, every private institution needs to align their policies to thinking “security first.” While most businesses have IT departments, many still lack a well-trained and sophisticated cybersecurity team within their organization. Such changes for a more secure network and security structure need to be made, as well as recruiting for the people who can do the job effectively (not just a one-person team). If companies fail to get started before it is too late, most of the world will find themselves at the mercy of cyber outlaws and APTS.

This post was authored by the Cyber Threat Analyst Team: Al MartinekCorey Sinclair and Taylor Ellis. 

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NodeZero: Filling a Unique Niche in Cybersecurity

23 August 2022 at 16:18

When an IT and cybersecurity team from a U.S.-based management consulting organization were searching for ways to improve their penetration testing, NodeZero and were able to answer the call.

“We’d done some penetration testing in the past, and it was quite expensive,” says the organization’s infrastructure manager. “We were looking to do this on a more regular cadence and looking at different solutions we could implement.”

After running into a team member from, they shared a rundown of what they were looking for and felt that NodeZero might be just what the situation called for.

“I liked the ease of implementation and use of the product,” he says. “And the ability to just do constant scanning and fixes without having to pay for every instance was the biggest appeal.”

The organization’s director of IT noted that there were solutions he’d encountered that could do external pentesting, but what they really needed at this stage was powerful internal pentesting capabilities.

“Looking at vulnerabilities and criticality was key for us,” he says. “And the biggest thing for me was having a full-package pentest, with all the functionality you needed to really look for and tackle vulnerabilities accordingly.”

The struggle to keep up

The organization’s biggest struggle at the time was simply being able to keep up with a small team – they didn’t have a dedicated team member to keep up with alerts and investigations.

“We wanted to be able to identify vulnerabilities ahead of time and keep ahead of the game,” says their infrastructure manager. “In the past, when we were doing scans, we were able to identify issues – fortunately none required significant time to fix – but being able to identify those things and act on them before they can be exploited is huge for us with a small team.”

“In looking at and enforcing our security strategy, we’re trying to implement controls – and with NodeZero, we’re able to implement the right controls and software we need to better our environment,” says their director of IT.

This also helps with various compliance requirements, a key component to the security team’s mission, as well as uncover any major vulnerabilities in the environment.

More frequent testing

The team wanted to be able to go in and do internal ops more often, something NodeZero makes uniquely possible.

“Being able to perform on-demand scans is really great – we can scan, make adjustments, and then run another scan to verify we’ve been successful,” says their infrastructure manager.

“We’re taking security to a higher level within the organization to obtain certifications in compliance, and this is going to help with that a lot,” says their director of IT.

Cost effectiveness and efficiency

One of the strongest draws to NodeZero was the ability to run those repeated pentest operations anytime and anywhere they needed them – without incurring additional costs.

“It’s just much more cost effective and easier to deal with the licensing,” says their infrastructure manager.

And to be able to run those operations for internal pentesting set it apart from other options on the market, says their director of IT.

“It’s one thing attacking an organization from the outside, but when attacking from the inside, you need to understand it and have the capabilities to do it,” he says. “I feel NodeZero has the capacity to do that.”
Getting up and running with NodeZero was quick and easy rather than adding cycles to a team that was already running lean.

“Setting up a scan is relatively quick and painless to do,” says their infrastructure manager.

“And even the reports are very intuitive – what the report surfaces and what we need to do to mitigate that,” says their director of IT.

It’s also enabled a frequency of testing they wanted, rather than being limited by the time and cost of standard penetration tests. Before NodeZero, the organization conducted pentests once or twice a year. They already plan to increase this to quarterly, or more – maximizing their return on investment.

NodeZero enables customers to turn a small team into their own seasoned and veteran team.

“It takes a lot of the work our team would have to go through to conduct these investigations, finds vulnerabilities and tells us what needs to happen, and even ranks those vulnerabilities and tells us why something should be considered more urgent than others,” says their infrastructure manager. “It helps prioritize work for optimal impact and address those issues that are going to be critical
to our environment soonest.”

“NodeZero, I think, fills a huge missing niche. Not just the skill set or background of company but the actual product, enabling you to do internal and external vulnerability testing to mitigate the issues most people are facing,” says their director of IT.

If you’d like to see how NodeZero works with your organization, have our experts walk you through a demo.

Download the PDF version

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