墨云科技 (Moyun Security) is a Chinese cybersecurity company that develops and operates Vack RT, an intelligent security validation platform available as a SaaS offering. The platform is designed to support penetration testing, vulnerability scanning, and automated red teaming activities, targeting both internal and external enterprise assets. Vack RT provides a library of over 4,000 detection modules, 3,000+ exploitation modules, and a vulnerability database exceeding 200,000 entries. The platform supports continuous security validation across an organization's security program, enabling automated red team operations using a broad set of attack techniques and tools for large-scale, rapid target testing. Key capabilities include remote collaboration to extend the scope of security validation, real risk assessment that evaluates vulnerabilities based on actual risk and potential impact, and attack surface management to identify and remediate exposed enterprise assets. The platform covers both internal network assets (hosts, domains, sites, and network devices) and external internet-facing assets, with support for Windows, Linux-based, and other common server operating systems. Vack RT is offered in two tiers: a free version supporting general testing scenarios with up to 100 tasks and one node, valid for six months; and a paid VIP version that adds HVV (red-blue confrontation exercise) scenarios, unlimited tasks, up to 100 nodes, remote control, SQL execution, and lateral movement capabilities, priced at 28,600 RMB per year or 2,999 RMB per month. The vulnerability database and modules are updated on a bi-weekly basis.