As security operations teams now use large language models (LLMs) and autonomous AI agents into their daily work, a new frontier is emerging: attackers deliberately manipulating AI agents. Prompt injection attacks—where an attacker hides malicious instructions that cause an AI agent to ignore its safety rules—pose a serious risk to enterprises. These attacks continue to grow in size and scale.  

Snyk’s security audit of the Agent Skills ecosystem, which includes Anthropic’s Claude, Vercel, and others, that 36% of all skills contained at least one critical-level security issue, including malware distribution, prompt injection attacks, and exposed secrets.

In June, researchers at Mozilla tested a prompt injection attack on Claude using indirect prompt injection—a technique that embeds malicious instructions in external content the AI agent processes. In this proof-of-concept, attackers took over developers’ systems by hiding indirect prompts in normal-looking repositories. When Claude Code executed them, the agent spawned a reverse shell.

AI agents often connect to more sensitive data than human employees do., A successful prompt injection can lead to catastrophic data loss or unauthorized system actions. Defending against prompt injection attacks requires multiple layers of protection. Security teams must monitor agent behavior for anomalies and prepare for agent containment, forensic preservation, and system remediation. Because AI agents execute tasks at machine speed, human responses must be able to match that pace.

The architecture of trust: Protocols and no “black box”

AI-native workflows need governed access rather than “black-box” autonomy. Modern governance frameworks use standardized protocols like the Model Context Protocol (MCP) to provide secure communication between AI clients and data sources. Visibility and transparency in agentic AI workflows matter, especially in cybersecurity. Autonomous agents perform complex tool executions and use independent logic, so they must show how they reached their decisions to meet regulatory requirements. Agents without transparency post serious risks: obscured reasoning can trigger unpredictable tool interactions, bypass governance controls, and create uncontrolled defensive gaps.

Implementing these protocols matters:

• Bounded Tenant Awareness: In a stable agentic AI architecture, multi-tenancy scales well. But if an AI tenant misbehaves, the entire system can fail. Bounded tenant awareness isolates any misbehaving AI agent to prevent cross-tenant contamination or data leakage.
• Strict Access Controls: By controlling connections to the platform, organizations can stop “ignore previous instructions” style bypasses. Maintain tight control over what the AI can see and do within a workflow.
• Standardized Telemetry: All telemetry must remain consistent and audit-ready. Even if an AI interaction is attempts to break rules, the underlying data movement gets tracked against established frameworks like MITRE ATT&CK and NIST.

Detecting the aftermath: UEBA and NDR as safeguards

A robust, unified SecOps platform can detect anomalous behavior even after prompt injection tricks an AI agent. Prompt injections often serve to steal credentials theft or extract data. When detected it’s important to act quickly. In agentic AI systems, misbehavior can escalate privileges, manipulate memory layers, create unauthorized identities, or alter shared reasoning components. Containment must be automatic and enforced at identity, authentication, and authorization layers.

These safeguards include:

• User and Entity Behavioral Analytics (UEBA): Identity-focused correlation and behavioral baselines to identify anomalous user activity or privilege escalation. If a compromised AI agent acts outside of its normal operational parameters, UEBA flags it in real-time and alerts a human security analyst.
• Network Detection and Response (NDR): Combining network traffic analytics with endpoint and cloud telemetry, NDR can identify data exfiltration or policy violations from a successful prompt injection.
• Multi-Layer AI Filtering: AI filters reduce raw alerts into high-fidelity incidents, cutting noise by up to 90%. This keeps the signals of an AI-driven attack from disappearing in a busy SOC.

Humans remain the strongest defense against AI agent social engineering. The human security analyst is still the one who makes the final decision. While AI handles triage and correlation, humans retain final control over response actions.

Moving beyond reactive guardrails

The traditional SOC model was never designed to handle machine-speed, AI-driven attacks. A human-augmented autonomous SOC approach moves from reactive alert handling to a proactive, verdict-first model. By combining a transparent, governed AI access with robust UEBA and NDR, organizations keep the SOC secure, transparent, and resilient as social engineering methods target machines.

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While AI is supposed to help defenders, it’s now creating more than twice as much noise as human-triggered incidents CrowdStrike detects as potentially malicious. The company’s threat hunting team and systems triaged an average of 14 million detection leads daily, resulting in about 36,000 customer alerts during the one-year period ending in June.

“AI agent-driven behaviors have surged past human triggers,” said Adam Meyers, senior vice president of counter adversary operations at CrowdStrike. “AI has driven the detections significantly above what humans are causing, and this gives you a sense of how frequently AI is being used, and really just that it’s being used everywhere.”

The threat posed by AI showed up incessantly during the past year, sparking alarming shifts and heightened targeting across software defects, open-source supply chains and AI tools themselves — all of which create greater difficulties for defenders, CrowdStrike said in its annual threat hunting report. 

“The AI tools that are being implemented by every enterprise across the globe right now are also creating an extended attack surface,” Meyers said during a press briefing. 

“AI is now a tool, a target, and a force multiplier for adversaries,” researchers wrote in the report, adding that AI-enabled malicious activity surged 89% during the past year as attackers used the technology to scale operations, hasten tradecraft and target AI infrastructure.

Attackers are using frontier AI models to uncover vulnerabilities and develop resources, including AI-generated scripts, payloads and commands that increase their effectiveness and efficiency. The technology also allows threat groups to design more creative ways to run automated attacks and boost impact by manipulating, interrupting or sabotaging AI systems and data.

“AI is both the weapon and the target,” Meyers said. 

Most organizations don’t view it as such, and thus far haven’t secured or put proper guardrails around the AI tools they use or address the ways attackers can use AI against them, he added. 

AI’s mark on vulnerabilities is particularly concerning, as reflected by what Meyers described as “one of the scarier stats” in this year’s report: 88% of vulnerabilities were weaponized through AI within 48 hours. 

“This is creating a rich ecosystem of vulnerabilities for attackers to use against various systems,” he said. It also renders the 30-day patch window obsolete, forcing organizations to struggle under a new baseline patch cycle of 24 to 48 hours, according to Meyers.

The AI ecosystem also became the next software supply chain battleground during the past year, as evidenced by TeamPCP’s rampage through open-source software in the first half of this year. 

The threat cluster compromised more than 300 software dependencies in one day, Meyers said. 

AI tools are already in the crosshairs and the attack surface will continue to grow as agentic systems, AI application integrations and dependency managers for AI agents proliferate, the report concluded.

“The same AI tools driving modern businesses are creating under-defended attack surfaces that adversaries are exploiting,” Meyers said. “We have to secure AI. This is absolutely critical.”

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Okta announced Thursday it has signed a deal to buy Permiso Security, a cloud-based firm that tracks threats tied to human, machine, and AI-driven digital identities. 

Permiso specializes in spotting risks after a user or system has already logged in, an area the industry refers to as identity threat detection and response. The company draws on more than 2,500 signals gathered from over 70 identity-related partners to flag issues such as excessive access permissions, unused credentials, unusual behavior from AI agents, and violations of internal security policies.

Ely Kahn, Okta’s chief product officer, told CyberScoop that Permiso will allow Okta to merge two functions that have operated separately: real-time threat detection and identity security posture management. “Today those are two separate products that don’t really talk to each other,” he said. 

Combining them, Kahn said, produces sharper alerts for security teams. As an example, he described a hypothetical scenario where a dormant administrator account is flagged by posture-management tools that later shows a login from an unfamiliar IP address. “By combining those things, you now have a very high-confidence, high-fidelity alert that’s more actionable by a security operations team,” Kahn said. “A security operations team on its own might not care about the dormant account, but when you combine that with some threat signals, then it becomes a higher critical-level alert.”

A crucial part of the deal, according to Kahn, is that Permiso will bring visibility beyond Okta’s current threat detection products, telling CyberScoop that customers also rely on other identity systems, such as Microsoft Entra ID or Active Directory, that fall outside that view.

“For us to be a real player in the identity security space, we have to look beyond the Okta perspective and give folks a full view into their identity threats,” he said.

The acquisition also fits into a security landscape reshaped by artificial intelligence. According to figures cited by Okta, 58% of executives say their organizations experienced an AI-related security incident or a near miss within the past year. That trend has pushed identity companies like Okta to expand beyond authentication and into continuous monitoring of what accounts, including AI agents, actually do once inside a system.

“Agents will be breached,” Kahn said. “The most important thing you can do is ensure that if an agent is compromised, the blast radius is small,” through a narrowly defined, revocable identity tied to each agent. 

Among the capabilities Okta says it will gain is a tool called SandyClaw, which tests AI agent skills and prompts in an isolated environment before they are allowed into a customer’s systems, aiming to catch supply-chain attacks embedded in AI tools. Other planned additions include expanded tracking of AI agent behavior across cloud platforms and software-as-a-service tools, and automated systems to investigate and isolate AI agents that appear compromised or misconfigured.

The transaction is expected to close in the third quarter of Okta’s 2027 fiscal year, pending standard regulatory and closing conditions. Terms of the acquisition, including its purchase price, were not disclosed.

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After a year and a half spent downplaying calls for AI safety regulations, the Trump administration has sharply reversed course, embracing a level of government scrutiny of frontier AI systems before public release–a far stricter stance than the Biden administration took.

An executive order designed to be friendly to the AI industry was meant to let the federal government briefly review some new models on a voluntary basis.

When the Trump administration, suddenly and without much warning, slapped export controls on Anthropic’s Fable 5 and Mythos 5 in response to private sector threat intelligence reporting, the U.S. AI industry officially entered its regulatory era.

But key questions and gaps remain. It’s not clear why the administration drew the line where it did, or whether they will move it again in the future.

While newer models like Mythos and OpenAI’s Daybreak do have stronger cybersecurity capabilities, the private sector reports the administration relied on describe capabilities already available in older commercial, open-source and Chinese models that nearly anyone can access.

CyberScoop spoke with current users of the latest frontier models, including OpenAI’s ChatGPT 5.5 and Fable 5, to learn more about what these models are currently capable of in offensive and defensive cybersecurity.

Cybersecurity experts and former government officials say the administration may be playing catch up on threats that have been building for years as it has more fully realized the national security implications of the technology.

Are the models breaking new ground or just breaking things? 

Users of Chat GPT 5.5, introduced this past April, and Fable 5 tell CyberScoop those models have been largely helpful to their work, even as they complained about high token usage and safety guardrails that hinder,  but don’t meaningfully prevent, defensive cyber tasks.

Eyal Webber Zvik, chief strategy officer at Cato Networks, a cloud and cybersecurity network provider in OpenAI’s Trusted Access in Cyber program, said they use GPT 5.5 and later OpenAI models to scan and triage internal codebases for vulnerabilities, test new safeguards and provide “highly autonomized service” to their customers.

Zvik wouldn’t disclose how many bugs 5.5 has found but said the company’s view is that it helps both find bugs that humans missed and rank which ones to patch based on factors like each bug’s exploitability.

“It is now a native part of our development environment and cycles, and we use those models to scale our entire codebase and make sure what we release into the service that our customers use to run their networks and network security has the least likelihood of having any vulnerabilities that can be exploited,” said Zvik.

John Hopper, vice president of engineering at SpecterOps, an identity security company, said newer models like GPT 5.5 are sharper and more persistent in pursuing their tasks.

“That can be a good or bad thing,” he noted.

One metric that SpecterOps tracks is how long it can keep a particular agent working before it moves off task or fails. That metric “matters a lot” because the longer an agent works without human help , the more agents a single operator can run at once.

Hopper said this provides defenders with immense value, and pushed back on the idea that the offensive capabilities the models offer are automatically more beneficial to malicious hackers. There is “a modicum of grounding that the industry needs when we talk about these models.”

“Yes, AI frontier tools will lower the barrier of entry, but these problems have always existed,” he said. “I don’t actually believe that AI is going to remove the needle in the haystack problem, but by howdy, using my two hands to find that damn needle, compared to using a backhoe, I can tell you which one I’d rather be driving.”

Eran Kinsbruner, vice president of product marketing at software security firm Checkmarx, told CyberScoop that later models like OpenAI’s Codex Security and GPT 5.5 are noticeably easier to set up and run with local systems, even for less technical users. That alone gives them an edge over many cybersecurity tools where interoperability is a constant concern.

However, GPT 5.5 burns through tokens at a much faster rate. He recalled one instance of using it to scan a medium-sized repository in three different programming languages.

“After 26 minutes I almost ran out of tokens, and it didn’t provide anything, just created a threat model for me and told me you want to buy more tokens?” he said.

In other instances, some of the scan results he received were not comprehensive.

Further, he expressed frustration with some of the guardrails designed to prevent risk – like only allowing users to scan local files but not code repositories like GitHub – “makes not too much sense” given how often developers must work with remote code.

Those kinds of guardrails – which can prevent models or developers from injecting malicious code or prompting into their models – sit at the heart of the debate in Washington D.C. and around the world. Some users feel differently about their utility.

Kinsbruner said that doesn’t make sense for organizations like his, which work with thousands of different enterprise organizations with  thousands of different code repositories spread across the internet.

“I cannot imagine how large-scale developers could just jump into this solution and make it an enterprise-grade, enterprise-level, de facto cybersecurity solution” out of it, said Kinsbruner.

OpenAI did not respond to a request from CyberScoop for an interview on GPT 5.5. The company has since released another model, GPT 5.6, that they said is more efficient at token use.

The White House’s crash course in AI cyber risk 

 The White House keeps changing its line on whether and how the U.S. government should limit the release of commercial frontier models. The shift comes from lessons learned since coming into office in Jan. 2025. Trump threw out Biden-era regulations meant to steer the industry toward safer models. Top officials like Vice President JD Vance argued against restricting industry progress.

Less than two years later, administration officials worry about the impact of speed and scale – two things AI excels at – in cyberspace.

According to Will Loucks, senior director of intelligence at the Office of the National Cyber Director, over the past two years the number of exposed and known vulnerabilities has shot up. Threat actors exploit those flaws faster before defenders can fix them. Once inside, the time from initial access to full network control shrinks.

“So in other words, every stage of the cyber operations lifecycle that a threat actor has to move through to get to a victim network and achieve an outcome, they’re just moving through more quickly faster,” said Loucks at a July 16 event in Washington D.C.

Speaking about AI in particular, Loucks said one of the defining characteristics of the technology is its ability to lower barriers for threat actors.

“Sometimes speed and volume have a threatening aspect alone, even if sophistication isn’t quite increasing in the same way, and the reason for that is because it places pressure on defenders…to triage alerts more quickly,” he said.

Jordan Rae Kelly, former director for cyber and incident response on the White House’s National Security Council during Trump’s first term, told CyberScoop that the changes over the past two years reflect the lessons the White House has learned on the issue since returning to office.

In the early days of this administration, Kelly said, “there is a sense and a spirit that the Biden administration was limiting AI and there was a kind of a rip-it-all-off [attitude], everybody go and do whatever, we will be the biggest and boldest and brightest.”

“I love that talking point, but I think what you’ve seen is probably an education over the last 19 months, where people [in the White House] have said that’s a challenging premise to put into place, knowing about the potential downsides and capabilities,” she added.

Michael Daniel, former White House cyber coordinator under President Barack Obama, thinks the horse may already be out of the barn.

Daniel, now head of the Cyber Threat Alliance, a membership nonprofit group focused on cyber threat information sharing between industry and government, said his members report that AI is being used to do things “faster and at a slightly bigger scale” but aren’t yet seeing the flood of exploitation that analysts have warned about. Not yet.

“I think what we’re seeing right now [and] talking about is ‘okay, where are the step changes [in the cyber threat landscape] actually going to occur?” said Daniel. “Are we and when will we see the explosion in vulnerability reporting from these Mythos-like capabilities? That’s what’s really got their attention right now.”

But Mythos and OpenAI’s Daybreak models are restricted to select organizations, and neither has publicly released its most powerful cybersecurity models to the public. That dynamic won’t last.

The UK’s AI Security Institute estimates that open source and foreign LLM models are between 4-7 months behind frontier U.S. models. In that setting, it’s hard to stop the development of AI models worldwide through export controls or other limits.

“It’s not like we’re buying ourselves five to ten years on this,” he said. “We’re not, and so I’m not sure the impact on the defenders who are trying to obey the law is worth whatever small hiccup we cause for our adversaries.”

Kelly said there’s merit to the administration’s current position, even if it took time to get there. Many federal cybersecurity procedures that operated even a decade ago – such as a Vulnerabilities Equities Process that could take days or weeks to consider the pros and cons of keeping an exploit – are no longer practical.

“All of that work to some degree, is out the window, because you can’t meet with the regularity you would need to meet to adjudicate vulnerabilities that are being found in seconds and exploited in minutes,” said Kelly.

But Kelly and others say that’s also because AI capabilities in cybersecurity are developing faster than policymakers can react, even in the best of times.

Key questions remain and the administration’s balance between national security and backing domestic industry will likely shift  in response to new events.  The administration wants a framework that can predict and manage the risks of AI models today and tomorrow. That may be harder than it sounds.

“Do I think they’ve been clear? No,” said Kelly. “But I think it’s a place where clarity is really hard to achieve.”

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Artificial intelligence is claiming many firsts as it permeates every layer of technology, including the tools cybercriminals use to break into networks, steal sensitive data, hop into connected systems and deploy malware. 

This includes, for the first time, according to Sysdig researchers, a case of agentic ransomware managing an extortion operation spanning reconnaissance, credential theft, lateral movement, persistence, encryption, destruction and the delivery of the ransom note itself.

The AI agent didn’t accomplish every step in the late June 2026 attack, but it allowed the threat actor, which Sysdig tracks as JadePuffer, to significantly reduce complexity, speed up the tempo and gain operational advantages. 

“We have seen attackers script attacks for years, and we have seen AI speed up individual steps of attack chains,” Michael Clark, senior director of threat research at Sysdig, told CyberScoop. However, this recent attack was “driven end-to-end by the model’s own decision-making, rather than a human at the keyboard,” he added.

The AI-aided attack achieved initial access by exploiting a Langflow vulnerability — CVE-2025-3248 — before moving on to its intended target: a production server running MySQL and Alibaba Nacos. 

Sysdig observed multiple factors that bolstered what it described as the first documented use of agentic ransomware.

The payloads involved in the attack narrated their objectives in plain language and identified high-value databases, details that large-language models annotate by default, according to Clark. The AI agent also quickly diagnosed problems and worked around obstacles — in one case redeploying a corrected payload 31 seconds after it originally encountered an error.

Before it was all over, the AI agent ran more than 600 distinct, purposeful payloads in rapid succession.

“The model closed loops that used to require a skilled human,” Clark said. “The 31-second failure-to-fix cycle on the Nacos backdoor is the clearest example of where agentic AI gave the attacker an advantage. The agent read the error, switched its approach from subprocess calls to direct library imports, and redeployed at a speed no human matches.”

Sysdig researchers found evidence that multiple models were used in the attack. The agent accessed keys for OpenAI, Anthropic, DeepSeek and Gemini as it gathered information on the victim’s systems. The cybersecurity vendor did not name the victim.

The AI agent played a crucial role in the attack, but a person was still heavily involved, Clark said. “A human still set up and pointed the operation and provisioned the infrastructure behind it, the command-and-control server, the staging server used for the stolen data and chose a victim,” he added.

The agent also connected to the victim’s MySQL server with root credentials that were not lifted from the victim’s environment, indicating a person gained access to the credential through a prior compromise. 

The origins of JadePuffer, a financially motivated threat actor, are unknown and it doesn’t overlap with any established ransomware group or nation state, researchers said.

For Clark, there is a clear uncomfortable takeaway from this attack: “The skill floor for running a full ransomware operation just dropped to whatever it costs to run an agent,” he said. 

“We have not yet seen operations against other victims, and given how cheap this agentic ransomware operation is to run, I would expect this will not be the last.”

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Cybersecurity agencies from the United States, Australia, Canada, New Zealand and the United Kingdom jointly published guidance Friday urging organizations to treat autonomous artificial intelligence systems as a core cybersecurity concern, warning that the technology is already being deployed in critical infrastructure and defense sectors with insufficient safeguards.

The guidance focuses on agentic AI — software built on large language models that can plan, make decisions and take actions autonomously. In order for this software to function it needs to connect to external tools, databases, memory stores and automated workflows, allowing it to execute multi-step tasks without human review at each stage.

The guidance was co-authored by the U.S. Cybersecurity and Infrastructure Security Agency, the National Security Agency, the Australian Signals Directorate’s Australian Cyber Security Centre, the Canadian Centre for Cyber Security, New Zealand’s National Cyber Security Centre and the United Kingdom’s National Cyber Security Centre.

The agencies’ central message is that agentic AI does not require an entirely new security discipline. Organizations should fold these systems into the cybersecurity frameworks and governance structures they already maintain, applying established principles such as zero trust, defense-in-depth and least-privilege access.

The document identifies five broad categories of risk. The first is privilege: When agents are granted too much access, a single compromise can cause far more damage than a typical software vulnerability. The second covers design and configuration flaws, where poor setup creates security gaps before a system even goes live.

The third category covers behavioral risks, or cases where an agent pursues a goal in ways its designers never intended or predicted. The fourth is structural risk, where interconnected networks of agents can trigger failures that spread across an organization’s systems.

The fifth category is accountability. Agentic systems make decisions through processes that are difficult to inspect and generate logs that are hard to parse, making it difficult to trace what went wrong and why. The agencies also note that when these systems fail, the consequences can be concrete: altered files, changed access controls and deleted audit trails.

The guidance also flags prompt injection, where instructions embedded inside data can hijack an agent’s behavior to perform malicious tasks. Prompt injection has been a lingering problem with large language models, with some companies admitting that the problem may never be solved. 

Identity management gets significant attention throughout the document. The agencies recommend that each agent carry a verified, cryptographically secured identity, use short-lived credentials and encrypt all communications with other agents and services. For high-impact actions, a human should have to sign off, and the guidance is explicit that deciding which actions require that approval is a job for system designers, not the agent.

The agencies admit the security field has not fully caught up with agentic AI. Some risks unique to these systems are not yet covered by existing frameworks, and the guidance calls for more research and collaboration as the technology takes on a growing number of operational roles.

“Until security practices, evaluation methods and standards mature, organisations should assume that agentic AI systems may behave unexpectedly and plan deployments accordingly, prioritising resilience, reversibility and risk containment over efficiency gains,” the guidance reads. 

You can read the full guidance below.

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