What 上海云盾信息技术有限公司 does

上海云盾信息技术有限公司, doing business as YUNDUN, is a Shanghai-based (闵行区) cloud-security and CDN-acceleration provider founded in 2013. The platform combines Web Application Firewall (WAF), Distributed Denial-of-Service (DDoS) protection, Content Delivery Network (CDN) acceleration and zero-trust access into a single cloud-native stack, with the security layer delivered via a proprietary AI risk-control brain ("风控大脑 / AI安全大脑") that performs terminal and behavioral risk scoring. Strategic partnership with Baishan Cloud (白山云) supplies 1,500+ global edge nodes and 90Tbps+ reserved bandwidth, enabling YUNDUN to offer global coverage and large-scale attack mitigation without owning the underlying transport infrastructure.

YUNDUN operates four product lines: application and infrastructure protection (SDK安全加速, Web安全加速, TCP安全加速, DNS安全加速, 扫描观测/Scan+); security expert services (exposure-surface detection, penetration testing, security inspection and hardening, critical-event protection); enterprise office security (一体化办公安全/SASE, 极速可信访问VTN); and overseas infrastructure (出海云主机ECS across Asia, Middle East, Africa, North America and Oceania). Reference customers span banking and payments (银联商务, 宝付 Baofu, 国美金融, 华福证券), healthcare (长海医院, 岳阳医院, 瑞金医院, 新华医院), manufacturing and defense industry, gaming, and e-commerce.

The business model is a hybrid of subscription-based security services priced in tiers (Web Security Acceleration lightweight from 680 CNY/month for SMEs), billable professional security engagements, and recurring overseas cloud-host subscriptions. Distribution is direct-to-customer via a self-service website (yundun.com), a 400 hotline, enterprise QQ, and integration with Baishan Cloud's global edge network; an active public Security Response Center and freemium/zero-yuan trials drive top-of-funnel demand. As of 2026 the company continues to operate with a disclosed headcount of 15 employees and no outside funding or parent-company relationship documented in the source data.

Name

上海云盾信息技术有限公司

Legal name

上海云盾信息技术有限公司

Website

https://yundun.cn

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

11–50 employees

Short description

Shanghai-based YUNDUN, founded in 2013, provides cloud-native WAF, DDoS protection, CDN acceleration, SDK-based client security and zero-trust SASE, delivered via a partnership with Baishan Cloud's 1,500+ global edge nodes to gaming, finance, e-commerce, healthcare and overseas-Chinese-business customers.

Ownership category

akta.pro rank

Product category

Cloud Security Services

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Computer Systems Design and Related Services (54151)

akta.pro primary industry

DDoS Protection & Mitigation (HDADABAG)

akta.pro secondary industries

Network Security Services (Firewall/VPN/ZTNA/SASE Integration) (BPAEAEAG), Cloud Security & Compliance Services (BPAEACAG), DDoS Mitigation & Traffic Scrubbing (Edge/ADC‑Adjacent) (HDAFAHAJ)

Keywords

• Cloud security services
• DDoS protection
• Web application firewall
• Zero trust access
• Vulnerability scanning

Headquarters

HQ city

Shanghai

HQ country

China

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations

Revenue model

1. Security Subscription Services (Web安全加速, SDK安全加速, TCP安全加速, DNS安全加速): Subscription-based security protection services providing continuous DDoS, CC, WAF, and CDN acceleration services. Customers pay recurring fees for ongoing protection, with products available at different tiers including a lightweight version at 680 CNY/month for SMEs.
2. Security Expert Services (安全专家服务): Professional security services including equal-level protection consulting, penetration testing, emergency response, on-site duty support, key event security protection, and other expert services billed as professional service engagements.
3. Cloud Hosting (出海云主机): Edge cloud host (ECS) services for overseas businesses, providing cloud compute resources across Hong Kong, Japan, Singapore, India, South Africa, Russia, United States and other regions, with on-demand customization available.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Shanghai Yundun Information Technology ("YUNDUN") sells a one-stop cloud security platform combining DDoS protection (SDK-based AntiDDoS), Web/TCP/DNS security acceleration, zero-trust office security (SASE), trusted network access (VTN), overseas cloud hosting (ECS), and content delivery, together with professional security services such as vulnerability scanning (Scan+), penetration testing, exposure-surface detection, security inspection/hardening, and heavy-period protection. The offering targets Chinese enterprises that need bundled network-layer defense, application protection, and secure remote access.

Product overview

YUNDUN is a cloud security and CDN acceleration platform operated by 上海云盾信息技术有限公司 (ShangCloud Shield). The portfolio includes core security acceleration products (SDK安全加速, Web安全加速, TCP安全加速, DNS安全加速) providing integrated DDoS, CC, and WAF protection; scanning and observation tools (扫描观测/漏洞扫描Scan+); and enterprise security office solutions (一体化办公安全SASE, 极速可信访问VTN). The offering also encompasses expert security services covering internet exposure detection, penetration testing, security inspection, and critical event protection. A separate infrastructure service provides overseas cloud hosts (出海云主机ECS) for global business expansion. The platform is strategically partnered with 白山云 (Baishan Cloud) which provides 1500+ edge nodes and 90Tbps+ bandwidth resources.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 90Tbps+ reserved bandwidth for DDoS protection with over 1500 global edge nodes
• +1 more outcomes

Named customers14 records

Segments6 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• 白山云 (Baishan Cloud)coreStrategic or Co-development PartnerYUNDUN has formed a strategic partnership with Baishan Cloud (白山云). This partnership combines Baishan Cloud's global infrastructure — 1500+ edge nodes and 90Tbps+ bandwidth resources — with YUNDUN's security technology. The partnership enables YUNDUN to offer global CDN and security acceleration services, covering full scenarios and full industries for domestic and international enterprises. The collaboration integrates Baishan Cloud's edge cloud services with YUNDUN's cybersecurity products for a unified security and acceleration platform.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• 深信服 (Sangfor Technologies): Leading Chinese cybersecurity vendor with strong SASE/ZTNA, aCloud, and NGAF firewall offerings. Directly comparable as a Chinese-headquartered vendor providing integrated network security plus zero-trust access to mid-market and enterprise customers.
• Akamai Technologies: Global CDN and edge security leader with App & API Protector, Kona DDoS Defender, and Guardicore segmentation. Comparable as a global edge-based security and content delivery provider competing in the same DDoS, WAF, and CDN categories as YUNDUN.
• Nexusguard: Specialist DDoS mitigation provider with global scrubbing centers serving enterprises, gaming, and financial services. Closely comparable as a pure-play DDoS protection specialist focused on high-volume volumetric attacks.
• 知道创宇 (Knownsec): Long-standing Chinese web security vendor offering cloud WAF, Anti-DDoS, and vulnerability scanning — historically a direct rival to YUNDUN in website security acceleration for Chinese enterprises.
• Cloudflare: Global cloud platform offering integrated DDoS protection, WAF, CDN, and Zero Trust networking as a unified SaaS. Cloudflare's bundled network-and-security stack is the closest direct international analog to YUNDUN's integrated WAF+DDoS+CDN+SASE portfolio.
• F5 (F5 Networks): Application security and delivery vendor with F5 Distributed Cloud WAAP, WAF, and bot protection. Comparable as an application-layer security provider competing in WAF and bot/crawler mitigation categories relevant to YUNDUN's web security offering.

Broad incumbents

• 阿里云 (Alibaba Cloud) Security: Hyperscaler with Anti-DDoS Pro, Web Application Firewall, and CDN bundled into cloud contracts. The dominant incumbent competitor in China that pressures independent DDoS/WAF vendors through scale and bundling economics.
• 奇安信 (Qi-Anxin): Largest Chinese pure-play cybersecurity company spanning endpoint, network, cloud, and threat intelligence. Competes with YUNDUN for large enterprise and government security budgets, with substantially greater scale and product breadth.
• 腾讯云 (Tencent Cloud) Security: Major Chinese cloud provider offering DDoS protection (BGP+IP高防), WAF, CDN, and zero-trust iOA. Competes head-on with YUNDUN for Chinese enterprise customers in gaming and fintech.

Others

• 白山云科技 (Baishan Cloud): YUNDUN's strategic infrastructure partner and edge cloud platform providing 1,500+ global nodes and 90Tbps+ bandwidth. Although not a direct competitor in managed security services, Baishan is the channel through which YUNDUN delivers its global footprint and could expand into security-as-a-service independently.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/%E4%B8%8A%E6%B5%B7%E4%BA%91%E7%9B%BE%E4%BF%A1%E6%81%AF%E6%8A%80%E6%9C%AF%E6%9C%89%E9%99%90%E5%85%AC%E5%8F%B8

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 上海云盾信息技术有限公司