The Register

Even limited voter rolls can be linked to identify people, research shows

Your voter data could be used against you. A foreign intelligence service that wished to identify the family members of deployed military personnel could do so by cross-referencing public voter record data and social media posts.…

Information security agencies from the nations of the Five Eyes security alliance have co-authored guidance on the use of agentic AI that warns the technology will likely misbehave and amplifies organizations’ existing frailties, and therefore recommend slow and careful adoption of the tech. The agencies delivered that position last Friday in a guide titled Careful adoption of agentic AI services [PDF] that opens with the observation that “Agentic artificial intelligence (AI) systems increasingly operate across critical infrastructure and defense sectors and support mission-critical capabilities,” making it “crucial for defenders to implement security controls to protect national security and critical infrastructure from agentic AI-specific risks.” The thrust of the document is that implementing agentic AI will require use of many components, tools, and external data sources, creating an “interconnected attack surface that malicious actors can exploit.” “Consequently, every individual component in an agentic AI system widens the attack surface, exposing the system to additional avenues of exploitation,” the document warns. To illustrate the risks agentic AI poses, the document offers the example of an AI agent empowered to install software patches that is thoughtlessly given broad write access permissions, with the following unpleasant results: Here’s another nasty agentic mess the document uses as a warning: An organization deploys agentic AI to autonomously manage procurement approvals and vendor communications, and gives the agent access to financial systems, email and contract repositories; This user only considers permissions for the agent when deploying it; Over time, other agents rely on the procurement agent’s outputs and implicitly trust its actions; A malicious actor compromises a low-risk tool integrated into the agent’s workflow and inherits the agent’s over-generous privileges; The attacker uses that privileged access to modify contracts and approve unauthorized payments, and evades detection by creating faked audit logs that don’t trip alerts. Australia’s Signals Directorate and Cyber Security Centre (ASD’s ACSC) contributed to the document, working with the USA’s Cybersecurity and Infrastructure Security Agency (CISA) and National Security Agency (NSA), the Canadian Centre for Cyber Security (Cyber Centre), the New Zealand National Cyber Security Centre (NCSC-NZ) and the United Kingdom National Cyber Security Centre (NCSC-UK). The document contains more scary stories, then lists 23 different risks and over 100 individual best practices to address them. Much of the advice targets developers who deploy AI, but the authors also urge vendors to ensure they test their wares thoroughly and ensure their products “fail-safe by default requiring agents to stop and escalate issues to human reviewers in uncertain scenarios.” The document also urges security practitioners and researchers to spend more time contemplating AI. “Threat intelligence for agentic AI systems is still evolving, which can introduce significant security gaps,” the document warns, because resources like the Open Web Application Security Project and MITRE ATLAS currently focus on LLMs. “As a result, some attack vectors unique to agentic AI may not be fully captured or addressed.” Given the huge to-do list for anyone creating agentic AI, or contemplating its use, the document argues for very cautious adoption. “Organisations should therefore approach adoption with security in mind, recognizing that increased autonomy amplifies the impact of design flaws, misconfigurations and incomplete oversight,” the document concludes. “Deploy agentic AI incrementally, beginning with clearly defined low-risk tasks and continuously assess it against evolving threat models.” “Strong governance, explicit accountability, rigorous monitoring and human oversight are not optional safeguards but essential prerequisites. Until security practices, evaluation methods and standards mature, organisations should assume that agentic AI systems may behave unexpectedly and plan deployments accordingly, prioritizing resilience, reversibility and risk containment over efficiency gains.” ®

Prioritize resilience over productivity, say CISA, NCSC and their friends from Oz, NZ, Canada

Information security agencies from the nations of the Five Eyes security alliance have co-authored guidance on the use of agentic AI that warns the technology will likely misbehave and amplifies organizations’ existing frailties, and therefore recommend slow and careful adoption of the tech.…

Britain's cyber agency is warning that AI-fuelled bug hunting is about to flush out years of buried flaws, leaving defenders scrambling to keep up. In a blog post on Friday, Ollie Whitehouse, CTO of the UK's National Cyber Security Center, said organizations should brace for a looming "patch wave," driven by a backlog of weaknesses now being exposed faster than many teams can realistically fix them. "All organizations have 'technical debt'; a backlog of technical issues – that is both expensive and time-consuming – as a result of prioritising short-term gains over building resilient products," Whitehouse wrote.  "Artificial Intelligence, when used by sufficiently-skilled and knowledgeable individuals, is showing the ability to exploit this technical debt at scale and at pace across the technology ecosystem," he added. The result, according to NCSC, is likely to be a "forced correction" as those weaknesses are uncovered and addressed in bulk. That warning lands just as vendors roll out tools built to do exactly that. Models like Anthropic's Claude Mythos and OpenAI's GPT-5.5-Cyber promise to find and fix bugs before attackers do, but the same capability also lowers the barrier to finding them in the first place. "We are expecting an influx of updates to address vulnerabilities across all severities, and expect a number to be critical," Whitehouse wrote. The cyber agency is urging teams to get ahead of the incoming flood by shrinking their exposed footprint. "All organizations must take steps to identify and minimise their internet-facing (and other externally-exposed) attack surfaces as soon as is possible," Whitehouse said, adding that defenders should "prioritise technologies on your perimeter and then work inwards." Even then, patching alone will not be enough; Whitehouse notes that unsupported or end-of-life systems may need to be replaced altogether. "Prepare to patch quickly, more often, and at scale," is the message from the NCSC. In practice, that means a lot more fixes landing at once, and a lot less time to get them done. ®

Britain's cyber agency says the bill for years of technical shortcuts is coming due, and it's arriving all at once

Britain's cyber agency is warning that AI-fuelled bug hunting is about to flush out years of buried flaws, leaving defenders scrambling to keep up.…

CISA has added a critical cPanel bug to its known-exploited list, confirming that attackers are already poking holes in one of the internet's most widely used hosting stacks. The vulnerability, tracked as CVE-2026-41940, carries a near-worst-case CVSS score of 9.8 and affects all supported versions of cPanel and Web[Host Manager (WHM) released after version 11.40, along with WP Squared, a WordPress management layer built on top of the same platform. In plain terms, a successful exploit can hand over full control of the server. The US government's cybersecurity agency added the flaw to its Known Exploited Vulnerabilities catalog on Thursday, confirming attackers are not waiting around. By the time cPanel shipped a patch on Tuesday, exploitation was already underway. Hosting provider KnownHost has been more explicit about what that looked like in practice, warning customers it had seen successful exploitation attempts before any fix was available. In a Reddit post, the company's CEO, Daniel Pearson, said the provider had "seen execution attempts as early as 2/23/2026" and urged users to restrict access and assume systems could already be compromised if left unpatched. Another hosting provider, Namecheap, says it temporarily blocked access to cPanel and WHM, effectively slamming the door shut until fixes were ready. It has since begun rolling out updates. There are also early signs of what those attackers are up to once they get in. A small business owner posting on Reddit said their company had been hit by ransomware after running what they described as a fairly standard cPanel setup, adding that their hosting provider appeared to be struggling under the weight of the incident. The attackers, they said, demanded $7,000 to unlock systems. The claim is anecdotal, but if it holds up, it suggests this bug is already being used by criminals to lock up systems, not just lurk quietly or skim data in the background. It's not yet known how many organizations have been impacted by the vulnerability, but security firm Rapid7 used Shodan to identify roughly 1.5 million internet-exposed cPanel instances.  cPanel underpins hosting for tens of millions of sites, many run by small outfits that rely on providers to handle security. For them, "patch now" often means "wait and hope," which is not a great place to be when a near-max severity bug is already being weaponized. ®

Exploitation was underway before patches landed, at least one victim reports ransomware demand

CISA has added a critical cPanel bug to its known-exploited list, confirming that attackers are already poking holes in one of the internet's most widely used hosting stacks.…

OpenAI is lining up a limited release of its new GPT-5.5-Cyber model to a handpicked circle of "cyber defenders," just weeks after taking a swipe at Anthropic for doing almost exactly the same thing. CEO Sam Altman said in a post on X that the rollout will begin "in the next few days," with access restricted to a group he described as trusted defenders working to secure critical systems.  "We will work with the entire ecosystem and the government to figure out trusted access for cyber," he wrote, adding that the goal is to "rapidly help secure companies and infrastructure." GPT-5.5-Cyber is built to spot flaws before anyone else abuses them. OpenAI says it can pentest, find bugs, exploit them, and tear apart malware, but as we have already seen, tools that break systems rarely stay in the right hands for long. OpenAI's announcement comes just weeks after Anthropic rolled out its own cyber-focused model, Claude Mythos, to roughly 50 organizations under tight controls, saying it would never be made publicly available – and Altman was not impressed.  As reported by TechCrunch, he took aim at what he framed as exclusivity dressed up as caution during an appearance on the Core Memory podcast.  "There are people in the world who, for a long time, have wanted to keep AI in the hands of a smaller group of people," he said. "You can justify that in a lot of different ways." He went further, likening the approach to selling fear. "We have built a bomb, we are about to drop it on your head. We will sell you a bomb shelter for $100 million." Now OpenAI is, if not building the same shelter, at least checking IDs at the door. Independent testing suggests the model is not just marketing fluff. The UK's AI Security Institute said this week that GPT-5.5-Cyber is "one of the strongest models we have tested on our cyber tasks," and noted it is only the second system to complete one of its multi-step attack simulations end to end.  It may be pitched as protection, but when the tools can both break and fix systems, the difference often comes down to who gets there first. ®

Altman's crew now doing the same gatekeeping it recently mocked

OpenAI is lining up a limited release of its new GPT-5.5-Cyber model to a handpicked circle of "cyber defenders," just weeks after taking a swipe at Anthropic for doing almost exactly the same thing.…