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  • ✇Cisco Talos Blog
  • Agentic AI security: Why you need to know about autonomous agents now Nick Biasini
    Agentic AI is making headlines worldwide for its potential force-multiplying capabilities, and organizations are understandably intrigued by how it can improve throughput and capabilities. However, as with any technological revolution, unforeseen issues are inevitable, and agentic AI is no exception. In organizations, these issues often arise from deploying personal assistants like OpenClaw or AI agents designed to optimize business and IT processes. Additionally, when personal assistants intera
     

Agentic AI security: Why you need to know about autonomous agents now

11 de Março de 2026, 07:00
Agentic AI security: Why you need to know about autonomous agents now

Agentic AI is making headlines worldwide for its potential force-multiplying capabilities, and organizations are understandably intrigued by how it can improve throughput and capabilities. However, as with any technological revolution, unforeseen issues are inevitable, and agentic AI is no exception. In organizations, these issues often arise from deploying personal assistants like OpenClaw or AI agents designed to optimize business and IT processes. Additionally, when personal assistants interact with “social networks” such as Moltbook, they introduce many hidden threats for organizations. These specific risks fall beyond the scope of this article, and will be addressed in a future blog.

This article will concentrate on agentic AI’s use within organizations and explore how these systems could potentially be used against them. There are two perspectives that must be taken into consideration when thinking about agentic AI: 

  • The perspective of organizations deploying agentic AI technologies to streamline their business and organizational processes 
  • The perspective focused on potential impacts of malicious agentic AI in the future

Both perspectives will be addressed, but let’s start with the first, which encompasses cybersecurity defense processes already in place, as well as the ways agentic AI can enhance those defenses.

What is agentic AI, how can it benefit organizations, and what are the dangers?

At its core, agentic AI is an autonomous system tasked with an objective, equipped with specific tools and resources. This system is typically powered by large language models (LLMs) with advanced reasoning capabilities. These capabilities allow the agent to plan how to achieve its objective, implement that plan, and, most importantly, verify results and try different approaches if errors occur. 

There are four questions an organization must ask when delegating a task to an AI agent:

  • Traceability: Can I track all agent actions, regardless of whether the outcomes are global or intermediate? 
  • Auditability: Is the task subject to regulatory oversight? Who is accountable for the outcomes produced by the agent? 
  • Business risk management: Have I conducted a business risk assessment on the AI agent’s possible actions? 
  • Cybersecurity threat management: Does the agent have guardrails to prevent malicious or disruptive actions during execution, regardless of its intent? 

AI agents can be incredibly powerful and task-oriented, so their actions must be scrutinized independently of intent. An agent may inadvertently destroy or expose data, while still successfully completing its task.  

An AI agent needs to adhere to basic cybersecurity and risk management principles. Just as you wouldn’t hand a new employee keys to all the data in your enterprise, AI agent access should be tailored for its specific role. Following good practices like threat modeling and risk management provides a solid foundation for successfully deploying AI agents. The optimal approach is to apply existing organizational roles to AI agents and adjust the data access accordingly.  The goal should be to ensure that the exposure from a compromised AI agent is no greater than from a compromised user; this is achievable only through strong access control. 

AI agents are not immune to external interference or direct attacks. Agents can search the internet to determine the best actions to achieve their goals. These actions could be manipulated, leading the agent to run a tool with an undesired consequence. At the same time, the act of making queries to the internet can result in information leaks.

When addressing these kinds of issues, it’s important to recognize that LLMs are not deterministic in nature, meaning that the execution of an agent to solve a task may vary each time, even if the task is consistently completed. This means that the traditional allow/deny approach may not be enough to provide the necessary safety and security boundaries. It is crucial to evaluate the potential outcomes of an action before execution — not from the perspective of the task at hand, but from a safety and security standpoint, free from goal-related bias. 

This oversight can be performed by a human operator, who authorizes critical steps in task resolution. It can also be provided by a separate model/agent tasked with evaluating the consequences of actions without regard to the overall objective. These evaluations can even be scored, triggering human review if a certain threshold is met. There may also be compliance requirements to track and log the actions agent actions, similar to those required for a user. 

Just as no system is 100% secure, no agent is 100% safe, especially given their non-deterministic and try-error reasoning features. However, this is not a new challenge. This is a threat modeling and risk management problem, which organizations have been facing for several years now.  

Organizations with mature cybersecurity practices model threat scenarios and prepare for incident response. They conduct business, information security, and cybersecurity risk evaluations for these scenarios and determine how each risk is managed. Using agentic AI should follow the same process: First, model threats based on agent privileges and capabilities, then evaluate the risks, and finally determine how to mitigate them.

Ultimately, we need to apply what we already know to this new context, drawing the appropriate parallels.

Near and not-so-far impacts of malicious agentic AI 

Agentic AI is already being used by malicious actors, as seen in cases like VoidLink. Nevertheless, this is just the tip of the iceberg, and defenders should be prepared for much more.

Agentic AI integration with attack frameworks is inevitable, and likely already underway; we just haven’t seen it yet. It may provide malicious operators with capabilities that could outpace defenders unless defenders also leverage agentic AI. 

Our tracking of attack frameworks and their evolution provides clues on what the next steps may look like.

The next stage for these attack frameworks could easily be an agent that runs on the backend, awaiting operator requests. These requests might include searching for, compiling, and locally testing exploits for software the operator found on the target system.

But this is just the beginning. The list below illustrates other developments likely to be adopted by malicious operators:

  • To accelerate operations, an agent may analyze the operator’s console and suggest actions based on console inputs. This would both allow the agent to infer the operator’s preferences and retain memories of the target environment — details the operator could otherwise miss.
  • More efficient use of an agent would involve the delegation of routine tasks, like environment exploration, system role recognition, and data exfiltration.
  • Eventually, an agent could be deployed directly in the victim environment to handle specific tasks, contacting the backend for inference. In this scenario, the operator simply assigns the agent a task and waits for a result, with the agent using covert channels, that don’t need to be synchronous.
  • The ultimate threat is a fully autonomous agent deployed and assigned a specific objective, using local inference and only contacting the backend upon task completion. Local inference reduces the risk of detection, as backend communications are kept to a minimum. Additionally, in long-term operations, the agent can perform tasks slowly, adapt its tactics from system to system, and even be instructed to use only living-off-the-land binaries (LOLBins).

These scenarios can be adapted by defenders to automate threat hunting and response, but all strategies must account for the risks and guardrails discussed earlier.

  • ✇Cisco Talos Blog
  • How Cisco Talos powers the solutions protecting your organization Martin Lee
    Cisco Talos is Cisco’s threat intelligence and security research organization that powers Cisco’s product portfolio with that intelligence. While we are well known for the security research in our blog, vulnerability discoveries, and our open-source software, you may not be aware of exactly how our know-how protects Cisco customers.Talos’ core mission is to understand the broad threat landscape and distill the massive amount of telemetry we ingest into actionable intelligence. This intelligence
     

How Cisco Talos powers the solutions protecting your organization

7 de Janeiro de 2026, 08:00
How Cisco Talos powers the solutions protecting your organization

Cisco Talos is Cisco’s threat intelligence and security research organization that powers Cisco’s product portfolio with that intelligence. While we are well known for the security research in our blog, vulnerability discoveries, and our open-source software, you may not be aware of exactly how our know-how protects Cisco customers.

Talos’ core mission is to understand the broad threat landscape and distill the massive amount of telemetry we ingest into actionable intelligence. This intelligence is put to use in detecting and defending against threats with speed and accuracy, providing incident response and empowering our customers, constituents, and communities with context-rich actionable cyber intelligence. Under the hood of Cisco’s security portfolio, you will find our reputation and detection services applying our real time intelligence to detect and block threats.

Defending networks

Possibly our best-known service is the Cisco Talos Network Intrusion Prevention system, widely known as SNORT®. Snort performs deep packet inspection on network traffic, using advanced signature-based detection to identify known threats. In addition, its machine learning-powered component, SnortML, helps detect and block attempts to exploit zero-day vulnerabilities, providing robust protection against both familiar and emerging network attacks.

Securing the web

The core of securing our customers across our product portfolio is Cisco Talos Web Filtering Service. This service considers the reputation and categorization of domains, IP addresses, and indicators surrounding the URL. The service can proactively block web traffic to sites that have a poor reputation or that serve content in contravention of a customer’s web use policy.

The Cisco Talos DNS Security service augments our web filtering by defending specific attacks at the DNS layer. It detects domains used by threat actors for command and control (C2), data exfiltration, and phishing attacks. Behind the scenes, our machine learning algorithms constantly analyze patterns in the DNS traffic to identify new malicious domains to add to our own intelligence.

Protecting your inbox

Cisco Talos Email Filtering analyzes a wide range of indicators within email to determine if it is malicious, spam, or a genuine email. This includes assessing the sender’s domain and IP reputation and behavior, examining URLs and the content they reference, and evaluating the body of the email, header, and any attachments. By combining these factors, our email filtering can identify benign messages, spam, phish, as well as other unwanted messages.

Cisco Talos Email Threat Prevention goes one step further than DMARC, the standard for properly handling emails with inaccurate sender data, by analyzing anomalies in email traffic patterns with AI, to identify when brands are being impersonated. This technology can detect when an email is likely to be a phish or a business email compromise attempt.

Detecting malware

Talos provides two complementary technologies to detect malware: Cisco Talos Antivirus and Cisco Talos Malware Protection. The former provides signature and pattern detection of malware within files to identify known malware, similar to our ClamAV open-source product. The latter goes further, checking the dispositions of unknown files and looking for suspicious behavior on the machine. This layered approach allows us to quickly spot and contain threats while our researchers scour telemetry for any indications that a bad actor has gained access to a device.

We also provide Orbital queries and scripts, a platform by which administrators can collect information from networked devices and use their own queries (or those provided by us) to hunt for devices that are insecure, out of policy, or potentially affected by a security incident.

Summary

You can find Talos’ intelligence integrated into a wide variety of Cisco products:

How Cisco Talos powers the solutions protecting your organization

Our published research and threat intelligence reports represent just a small part of the work we do at Talos. The many hours our researchers, analysts, and engineers spend researching the threat environment and developing systems to detect and block attacks bear fruit in the components that we deploy as part of the Cisco Security portfolio. Our intelligence and know-how protect Cisco Security customers from threats, brand new or decades old.

Note: You can benefit from the experience of our analysts directly through a Cisco Talos Incident Response (Talos IR) retainer. While Talos IR can provide relevant threat information and expert emergency incident response, you can also use our proactive services to help prepare your systems, support and train your team, or actively hunt for bad guys on your network.

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