How Agentless Security Can Prevent Major Ops Outages
The Crowdstrike outage in July is one of the rare situations that changes the security landscape of businesses forever. The “blue screen of death” (BSOD) incident affected over 8.5 million devices globally, causing significant disruptions across multiple sectors, including aviation, healthcare and banking.
The financial impacts were substantial, with estimates suggesting that Fortune 500 companies experienced close to $5.4 billion in losses, Reuters reported. And only a fraction — between $540 million to $1.08 billion — was insured, according to Parametrix CEO Jonathan Hatzor.
This event has forced CISOs to rethink their security strategy, including focusing on removing single points of failure and enhancing system resilience. Many are shifting to agentless security to help protect their systems.
Why Agent-Based Systems Are So Risky
The cause and effects of the CrowdStrike outage have been well documented. In brief, the issue started when CrowdStrike released a faulty update for its Falcon security software. The update was supposed to improve security by thoroughly checking certain Windows system processes. However, a mistake caused the Falcon software to crash, which in turn caused Windows systems to crash.
Although CrowdStrike fixed the issue within two hours, many systems had already updated to the flawed version, causing global system failures. The underlying problem, however, was Falcon’s close integration with the Windows operating system.
This incident highlights a major problem with agent-based security systems, in which security software is deeply tied into system processes. If the security software fails, the entire system can crash.
As a result, the cybersecurity industry has started to change its approach. Many enterprises now prefer agentless security models, which are less risky and don’t interfere much with core system functions.
Growing Preference for Agentless Security Models
Agentless security protects your devices and cloud environments without having to install software on individual devices. Instead of adding a program (or agent) on every device to monitor and secure it, agentless security uses direct access to your cloud services and data through special permissions (like APIs).
Before exploring how agentless security works and its benefits, let’s examine the drawbacks of traditional, agent-based security that explain why there’s a growing preference for agentless security.
Bring Your Own Device (BYOD) Policies
Many organizations allow employees to use their personal devices for work because it increases flexibility and reduces costs.
However, personal devices often lack the robust protection needed to prevent data leaks or cyberattacks. With traditional security measures, you either need to prohibit personal devices or install, update and configure security software on every laptop.
The latter is time-consuming and puts extra pressure on your IT team, whether you have 100 or 100,000 employee-owned devices. Additionally, employees may resist installing security tools on their personal devices, leading to gaps in protection.
Agentless security addresses these issues by securing data and monitoring networks without installing software on each device. This simplifies management and improves overall security.
Consultants and Third Parties
Organizations frequently collaborate with external consultants or vendors who may use less strict security protocols. These third parties often access sensitive company data, but their systems are outside the organization’s security controls. This disparity creates a significant risk for data breaches, as the security practices of third parties may not meet the required standards.
Agentless security allows organizations to protect their data when third parties access their cloud systems, reducing risks from weaker security practices outside the company’s control.
Cloud Data Proliferation
As an organization’s data moves to the cloud, sensitive information often ends up outside secure company systems. Traditional security models struggle to protect this data once it’s no longer in direct control.
For example, companies can’t fully monitor or secure employees’ third-party storage like Google Drive or Dropbox. If an account is hacked or data is shared with unauthorized users, the risk of breaches increases.
Agentless security steps in to detect vulnerabilities using cloud provider APIs to monitor data and ensure compliance.
Direct Cloud Access via APIs
Many systems and applications connect directly to cloud services through APIs, bypassing traditional endpoints.
Since these connections are not managed, they fall outside the scope of agent-based security. This lack of visibility and control over API access poses a serious security risk, as unauthorized access can go undetected.
Agentless security, however, can monitor and secure these connections by working directly through the cloud’s API, providing protection even when there are no agents involved on the endpoints.
How Agentless Scanning Works
An agentless security model is a modern way to secure cloud environments without installing agents on each workload. It uses cloud providers’ native tools and APIs to monitor and protect assets like virtual machines, containers and serverless functions.
Here’s how it works: Data is collected through API calls, providing real-time insights into vulnerabilities. A secure proxy ensures seamless communication without affecting performance. This model continuously scans workloads, offering 100% visibility and detecting issues without disruption.
Agentless security is ideal for dynamic, multicloud environments, as it offers simplicity, scalability and strong protection with minimal operational impact.
Benefits of Agentless Security
Agentless cloud security simplifies protecting your environment by removing common hassles that come with using agents. Instead of installing software on your systems, agentless scanning pulls data directly to the scanner, making it less intrusive and easier to manage.
Here are some key benefits of agentless security:
- Less maintenance: No need to manually manage or update agents.
- Reduced resource usage: Since agents aren’t running, there’s less impact on system performance.
- Increased coverage: Perfect for cloud setups with short-lived or paused workloads, as monitoring continues without interruptions.
- More flexibility: You can scale your security efforts easily across various environments.
- Seamless management: It provides a central, easy-to-use interface for tracking everything in one place.
- Cost savings: With less overhead and fewer resources consumed, it’s more budget-friendly.
Mitigating Future Risks with Hybrid Security
Instead of picking between agent-based and agentless security, you can use both together. Agent-based security works best for stable, less-changing systems. It offers deep, ongoing monitoring when things stay the same.
On the other hand, agentless security is great for fast-paced cloud setups where new workloads come and go often. It gives real-time insights without needing to install anything, making it flexible for larger cloud systems.
A hybrid approach gives you stronger protection and keeps up with changing threats, making sure your defenses are ready for whatever comes next.
What’s Next for Cybersecurity
As multicloud use grows, agentless security will provide real-time monitoring without adding agents. However, agent-based tools will not be replaced completely.
AI and machine learning will play bigger roles, predicting threats and adapting protocols automatically. As Internet of Things (IoT) use expands, companies will start adopting IoT security with advanced encryption and AI-powered monitoring.
Furthermore, zero-trust architectures will be key to security, as they ensure continuous verification of every user, device and connection, both inside and outside the network.
Businesses are on the hunt for security solutions that scale easily and simplify their operations, especially with remote work growing. The goal is to protect a broader attack surface with better visibility and flexibility.
The CrowdStrike BSOD incident has made businesses reconsider their cybersecurity strategies, with many now preferring agentless security. Agentless Zero Trust Cloud Security solution by AccuKnox provides real-time threat detection and insights customized for your environment. It is easier to manage, improves coverage and lowers the risks associated with traditional agent-based systems.
