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Perspectives

External Exposure Management: Key to Safeguarding Your Attack Surface

Tim-Matthews
By Tim Matthews
Chief Marketing Officer
August 3, 2023

The number of security threats and risks continues to grow rapidly with each passing year. Security teams work tirelessly to mitigate every alert labeled ‘high priority’—but there are too many, and it’s tough to tell which are true from the false positives. Fact: the average enterprise today identifies 345 new ‘critical’ threats every month.

Threats originate from many sources. They can arise when hackers adopt new attack techniques, which happens daily. Other threats stem from the ever-growing enterprise tech stack. But the top factor is the many systems and networks exposed to the Internet, and the dynamic nature of the cloud and the cyber threat landscape—which, according to our research at CyCognito, can cause attack surfaces to fluctuate by about 9% monthly. 

This has been a major challenge for security teams. As the attack surface management becomes more complex, discovering hidden and unmanaged assets becomes even more arduous—which account for over 50% of breaches today.

The result: threats often go unnoticed, and remediation becomes a moving target. One day your attack surface is compromised, and customer data is exfiltrated—and the cost to business becomes real. Case in point: the average data breach today costs $4.35 million per incident

Continuous threat exposure management & finding the sharpest needles in the haystack

It’s no secret that security teams have limited ability to discover every asset, yet they are inundated with thousands of alerts. But how many are actually critical? A better question: how do they know which alerts to prioritize? 

Isolating the truly critical issues first requires visibility across the attack surface, but even more importantly, it requires a thorough understanding of the context and purpose of the assets affected. Once that’s established, security teams can calculate attack paths and predict which specific threats matter—those likely to cause serious monetary or reputational damage to the business. Implementing an effective exposure management program ensures that the organization can prioritize correctly and remediate for maximum impact.

But all of this is easier said than done.

In the past, security teams tried to seal off weaknesses by acquiring point solutions for specific issues. They piled tools onto their security stack, which led to stack bloat. Some of these legacy vulnerability management solutions have worked to a degree, but only on a small scale. We conducted a study with ESG and found that security pros don’t include workloads running in the public cloud or third-party assets when defining their attack surface. This means many issues go unaccounted for.

But external attack surfaces are vast and complex. A single organization can have hundreds and thousands of systems, applications, cloud instances, supply chains, IoT devices and data exposed to the Internet—often sprawling across subsidiaries, multiple clouds, and assets managed by third parties. 

And cyber attackers are well aware. They relentlessly explore the attack surface, hunting for the path of least resistance and that one gap which security teams don’t monitor. Unfortunately, one security gap is all they need to break in. Meanwhile, security teams have the difficult task of identifying the exposures that make their organizations most vulnerable, and then taking action to protect those entry points. 

Technology is only a fragment of the solution. A comprehensive exposure management solution is imperative, pushing organizations to reconsider their approach to securing their attack surface.

The rise of exposure management platform

Exposure management as a discipline has been growing in popularity among security leaders and analyst groups such as Gartner and Forrester. It takes cyber threat intelligence (CTI) into account but offers a more comprehensive approach to protecting the attack surface. It adapts to the constantly evolving threat landscape, operating on the principle that today’s low-risk exposure can become high-risk tomorrow—and all it takes is a new type of attack or a misconfiguration to create an opening. 

Exposure management starts with visibility. In 2022, Gartner recommended a constantly updated “inventory of the expanding enterprise attack surface” and pointed out that “even small, seemingly inconsequential additions to the digital footprint can weaken an organization’s security controls and data protection efforts.”

The other critical pillar of exposure management is prioritization of threats and cyber risk based on their potential for real-world risk and damage.

Measuring the business risk of any given threat requires a full understanding of the context of each asset exposed. For example, what is its purpose? Does it handle valuable data? Contextualization is tedious and painstaking, but organizations can achieve the necessary scale by leaning on automation, which enables security teams to identify, prioritize, and manage threats without adding headcount. 

Adopting an exposure management strategy to transform how security teams function

  • Discover virtually all exposed assets, both internal and external, automatically — and then provide vital, actionable data about them. 
  • Automatically determine the business importance of exposed assets and attribute them to the correct owner in the organization. 
  • Determine potential attack paths (exploitability) for each asset. 
  • Prioritize risks based on the asset’s importance, its exploitability and the probability of attack based on intel about known threat actors.
  • Remediate threats efficiently.

To recap, effective risk mitigation is enabled by automated discovery of assets and their ownership, threat detection, contextualized threat intel, ticket creation, and mitigation. Where feasible, automated validation of each remediation action is the ideal finisher. 

Exposure management program is the future in cyber risk

Attackers have proven their approach works. To stay ahead of them, organizations need to think like them. They seek to operate where there is a lack of visibility. External exposure management takes a holistic approach to managing the entire attack surface—from exposure visibility, prioritization and remediation.

But making the leap requires a shift in mindset and resources. MSPs can be great partners on this journey. They can help implement a program that includes everything from redefining an organization’s attack surface and risk management policies, to choosing the technologies that will safeguard valuable assets effectively against threats.


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CyCognito Research Report

State of External Exposure Management

State of External Exposure Management

Download CyCognito’s State of External Exposure Management Report to learn key recommendations that your Security teams can implement to improve their exposure management strategy and minimize risk.

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External Exposure & Attack Surface Management For Dummies

External Exposure & Attack Surface Management For Dummies

As your attack surface has grown to cloud infrastructures and across subsidiaries, attackers are looking for and finding unknown and unmanaged assets to serve as their entry points.

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