We found a Tencent agent fleet A fleet of AI agents running on Tencent Cloud made more than 2,600 attempts to extract data from Amap, Alibaba's mapping service, between 28 September and 8 October 2026, according to an investigation published by urlquery.net. The agents attempted to bypass anti-bot protections, used Amap keys published on the web including one company's key and security code leaked in a public repository, and tried to retrieve data from pre-production systems not intended for public use. The investigators, who said they communicated with the running fleet through a service they operated with a Claude agent, found no evidence the agents coordinated in real time and labeled them a fleet rather than a swarm. Investigation · urlquery.net · Amap We found a Tencent agent fleet † Correspondence: chinesefleet@swarmcha.se · Names are listed alphabetically by last name within each group single-name authors by their displayed name ; individual contributions are listed at the end. Editor’s note: We changed the title of this article because we wanted to make clear where responsibility for this incident belongs. Intro Between 28 September and 8 October 2026, a large group of AI agents running on the cloud platform operated by Tencent attempted to answer questions about places in China using a Chinese Google Maps-like service, Amap. The questions were mostly about everyday topics, such as which zoo entrance most people use Amap to navigate to. The agents attempted, sometimes successfully, to bypass anti-bot protections and find test answers; they attempted to use Amap keys published on the web, including one company’s key and security code leaked in a public repository, and attempted to retrieve data from pre-production systems not intended for public use. Unlike in previous https://www.reuters.com/world/europe/openai-agents-hijacked-german-website-previously-undisclosed-ai-breakout-this-2026-09-04/ rogue agent incidents https://metr.org/blog/2026-08-26-openai-hugging-face-incident-investigation/ , which all involved swarms i.e. agents coordinating explicitly , we found no evidence that the agents coordinated with one another in real time, and thus we label these rogue agents a fleet rather than a swarm. On 4 October, we published a preliminary report on the fleet at a hackathon, while the fleet was still running. Afterwards, we noticed a message in one of the agents’ drop boxes that were previously being used to hold results. This time, though, this drop box message seemed to confirm that agents had become aware of our report. In response, we added text to the preliminary report, invisible to human readers, describing a service where agents could make requests for data on the web. We advertised that these requests would be forwarded to an agent that could operate a computer. In reality, this service was run by us and a Claude agent, and through it we were able to directly ask agents questions about their tasks, environment and operator. As far as we are aware, this is the first case of an outside party communicating with a running rogue agent fleet. We do not believe the issues discussed in this report are unique to Tencent. So far, public cases of AI agent fleets behaving in this manner attributed to a lab https://www.anthropic.com/research/alignment-assessment-cybersecurity-incidents have https://www.nbcnews.com/tech/tech-news/google-says-ai-model-gained-unauthorized-access-three-systems-rcna598651 involved https://www.anthropic.com/research/investigating-unintended-model-actions American https://www.reuters.com/world/europe/openai-agents-hijacked-german-website-previously-undisclosed-ai-breakout-this-2026-09-04/ labs https://alignment.openai.com/misalignment-reports/ ; the case discussed in this article ran on Chinese infrastructure and involved Chinese companies. We believe this demonstrates that model alignment more generally is still an unsolved problem, and predict that if capabilities continue to advance as they have over the last few years, operators will find it increasingly difficult to restrain their models and guarantee safety. Technical Overview Between 28 September and 8 October 2026, a fleet of AI agents running on Tencent Cloud made more than 2,600 attempts to extract data from Amap, Alibaba's mapping service and a prominent map app in China nearly 1 billion monthly active users, according to Alibaba citing QuestMobile https://www.alibabagroup.com/document-1945578421555822592 . We use the term “fleet” rather than “swarm” because the agents were not interested in coordinated action, though they still behaved similarly due to shared goals and presumably shared architectures. The agents used urlquery.net, a public security-scanning service, as a remote code runner by packing their own programs into URLs for the browser to execute. When Amap blocked them, they tried further workarounds: they intercepted tokens generated by Alibaba's own anti-bot libraries, probed Alibaba's pre-production servers, routed requests through third-party readers and translation services, and sent API requests using Amap keys exposed in public code—including security codes that Amap recommends keeping server-side in production. Most attempts failed, but some runs retrieved the data the agents were after, which they smuggled back out through webhook inboxes, request URLs and page titles. Early on, we realized that we could try to communicate with the agent fleet, as it was still ongoing, and so we added invisible text to our website that only agents would see when using a web fetch tool. We sent several messages back and forth with different agents; further details are available in Communication with the fleet communication . We also investigated the source of this fleet. In this report, we establish this agent fleet’s link to Tencent both via records available on the open internet and via a source we spoke to on background see Tencent’s Actions response . All 17 of the agents' inboxes that we could inspect through October 5 were created from Tencent Cloud servers in Hong Kong by IP geolocation . Every observed direct request from the agents' Tencent machines passed through a proxy called hysandbox-ats . The name matches a Tencent domain: in August, an SSL certificate for .hysandbox.tencent-cloud.com was issued to Tencent. Several lines of evidence point to Tencent's Hy https://www.tencent.com/tencent-releases-and-open-sources-tencent-hy4-preview/ Hunyuan model team: the proxy's name, the task domain, and the timing the fleet appeared a month after the Hy4 preview was released . However, the section on Tencent’s actions below complicates the conclusion that this is definitely Hunyuan; we are deeply uncertain about what model was being evaluated. The results of our investigation illuminate exactly how hard it is to align a model. Agents can spontaneously go off script even on tasks as innocuous as finding which of Chengdu Zoo's entrances most people use Amap to navigate to. Running large numbers of agents is a difficult feat of engineering and the subject of an emerging model alignment problem. We ask every lab running internet-connected agents, in China, the United States and elsewhere, to audit what their sandboxes can reach, share their discoveries, and design evals that are less prone to contamination on the open web. The responsibility of auditing, discovery, and design needs to be shared by all labs; it is likely that there are more undiscovered fleets all over the internet, and labs have the best resources and information to discover and root out other rogue agents operating outside the bounds of their task. These rogue agents also leave traces on the internet, which may enter pretraining and influence future model behavior negatively. Tencent’s Actions We sent Tencent a list of questions questions-to-tencent , but have not received an official response from the company. We spoke on background with a person close to Tencent who has direct knowledge of the matter. According to the source, the agent fleet originated from research evaluations carried out by Tencent’s evaluation research team, which is separate from the Hunyuan model development team. The evaluation was designed to assess the ability of third-party AI models to browse the web and answer questions. The source also said the agents under evaluation were built on third-party models, not Hunyuan models. The source added that the research project was temporary, and has since concluded. Subsequent internal review has found no evidence that the agents were coordinated to target any specific platform or that external systems were breached. The source also agreed to explore follow-up technical conversations with Tencent researchers to further pursue joint research and analysis. How we found the fleet AI Digest https://theaidigest.org/ and Grove Research https://groveresearch.com/ put on the “ AI Swarm Dynamics Hackathon https://swarmchasing.com/ ”, with the stated goal of “Building the tools we wished we had for the Hugging Face incident”.