Is Your Attack Surface Growing Faster Than Your Security?

In today's digital-first business environment, the race to adopt new technologies often outpaces the strategies to secure them. From cloud services to remote work tools, organizations are rapidly expanding their digital presence.

However, with every new tool, platform, or endpoint comes a new potential vulnerability. This expanding "attack surface" can leave businesses exposed, especially if they don't actively monitor and manage it.

This article will explore everything you need to know about the attack surface, including what it is, its potential risk, and feasible ways to reduce it.

What Is an Attack Surface Exactly?

An organization's attack surface is the total sum of potential exposures, entry points, or avenues — sometimes referred to as attack vectors. Attackers use these points to gain unauthorized access to a network and perform a cyberattack.

As businesses continue to move to the cloud and adopt hybrid working models, their networks (and the associated attack surfaces) have become increasingly large and complex.

One report found that 67% of companies have experienced substantial growth in their attack surface in the last two years. Moreover, Gartner even identified attack surface expansion as the No. 1 security and risk management trend in 2022.

Different Types of Attack Surfaces

Experts typically break down an attack surface into three types: digital, physical, and social engineering.

Let's explore each to understand why the attack surface keeps on expanding across industries and sectors:

Digital Attack Surface

This attack surface includes all internet-connected devices, apps, and systems that hackers can target. In short, the more tech a company uses, the more doors it creates for attackers.

Some common digital threats include:

• Shadow IT: Apps or tools used by employees without approval from IT. Although they may seem harmless, chances are these apps create unseen vulnerabilities (or entry points for cybercriminals) since your security or IT team doesn't monitor them.
• Unsecured APIs: APIs help connect software systems. However, if they aren't properly protected, hackers can sneak in through them.
• Outdated Software: Old software and apps often have known flaws. Cybercriminals can easily target these gaps to steal data or install ransomware.
• Coding Errors: No IT or software developer is perfect, and even the most skilled professionals can make minor errors. For attackers, these minuscule mistakes create an ideal opportunity to bypass security and infiltrate the system.
• Misconfigurations: Incorrect settings in systems, firewalls, or network devices could accidentally open paths for hackers.

Physical Attack Surface

The physical attack surface is about real-world access to devices. If a hacker gets hold of a laptop or USB drive, they can access and steal sensitive data.

Here are a few attack vectors companies should know:

• Device Theft: If a company laptop is not encrypted and falls into the wrong hands, everything on it, from confidential data to processes, is at risk.
• Discarded Hardware: Old devices, whether a phone, hard drive, or computer, tossed out without wiping their data can be treasure troves for hackers.
• Passwords on Sticky Notes: Writing down passwords on sticky notes (on your computer or laptop monitor) may seem convenient, but it can easily lead to a security breach.

Social Engineering Attack Surface

ISACA's State of Cybersecurity report stated that social engineering is the leading cause of network breaches. But what exactly are those?

Social engineering attacks target people and not systems. Hackers use tricks to fool employees into handing over information or clicking harmful links. A typical example is phishing, which is fake emails or texts that look real but are designed to steal personal data or install malware. Often, attackers even pretend to be IT support to get users to give away confidential data.

The Risks of Overlooked Vulnerabilities

A growing attack surface increases the risk of breaches, data leaks, and ransomware. Cyberattackers often look for the "low-hanging fruit" — the unpatched server, the open port, or the abandoned web app still connected to your domain.

When attackers exploit these weak points, the consequences go far beyond financial loss. A breach can disrupt daily operations, damage your reputation, and result in serious legal or compliance issues.

In 2024, the average cost of a data breach reached $4.88 million, and that number continues to rise each year. Staying ahead of threats isn't just a matter of security; it's a matter of business survival.

Moreover, the cost of a breach is more than financial. It disrupts operations, erodes trust with customers, and can lead to legal or compliance issues.

How to Identify and Manage Your Attack Surface

Want to level up your game and reduce your company's attack surface? If so, you need to adopt a proactive approach to attack surface management, which means identifying, monitoring, and reducing exposure points before hackers can exploit them.

Let's look at some actionable ways to reduce your attack surface:

Map Out the Attack Surface Area

When mapping your attack surface, the goal is to identify every possible weakness a hacker could target. List all the devices, servers, apps, databases, firewalls, APIs, and storage systems your organization uses. Don't forget physical devices such as laptops or USB drives because anything connected to your network is at risk.

By mapping your entire attack surface, you can see where you're vulnerable. Then, you can focus on fixing the highest-risk areas first.

Educate Your Team

Train workers to spot phishing attempts, employ strong passwords, and report anything suspicious. Many cyberattacks start with simple mistakes — awareness can stop them early.

Use a Zero-Trust Approach

Only give people access to what they really need. A zero-trust strategy limits how much of your system someone can reach, reducing the risk if their account is ever compromised.

Segment Your Network

Make sure to break the network into smaller sections. If an attacker breaks into one part, they won't automatically gain access to everything else.

Run Regular Vulnerability Scans

Scan your systems regularly to catch weaknesses before a hacker does. But keep in mind that manual audits are no longer sufficient. One effective way to identify weak points is to check your system from a hacker's perspective.

That's precisely what an external vulnerability scanner does. It scans your public-facing assets, such as websites and email servers, for known weaknesses, misconfigurations, or outdated software that could be exploited.

Set Up Two-Factor Authentication (2FA)

Require 2FA for all work accounts. Even if a hacker obtains a password, they will still need a second verification step, making it much harder to break in.

Remove Unused Apps and Software

Get rid of old, unused programs. Every app you keep adds to your attack surface, so minimize it by deleting anything that's no longer needed.

Some Final Tips

As reliance on digital infrastructure increases, waiting for an incident to expose a security gap is no longer an option. With a proactive attack surface management strategy and tools like external vulnerability scanners, your business gains the visibility and control needed to minimize risk and respond more quickly.

In cybersecurity, ignorance is NOT bliss. Don't allow your company to expand into danger without even realizing it. Get a know-how of the size of your digital footprint, identify the associated risks, and take meaningful steps to reduce your exposure.

Remember, as your business expands, so will your attack surface. The question is: Will your security expand with it?