DDoS protection providers
We list 19 companies active in DDoS protection, and 8 of them have it as their main focus. 8 are public, 4 are owned by another company and 7 are private. Most are based in the United States (10). The oldest, Microsoft, was founded in 1975. By revenue from annual reports, the largest company here is Microsoft ($331.8bn in FY2026).
By countryUnited States 10
Companies focused on DDoS protection
8 companies| Company | Based in | Founded | Size | Ownership | Revenue |
|---|---|---|---|---|---|
 NETSCOUT NETSCOUT provides real-time network visibility, observability, cybersecurity, and DDoS protection solutions. | Westford, United States | 1984 | Public, NTCT | $859.5m (FY2026) | |
 A10 Networks A10 Networks provides secure, high-performance networking solutions for applications and AI workloads. | San Jose, United States | 2004 | Public, ATEN | $290.6m (FY2025) | |
 Allot Allot provides network intelligence and security solutions for service providers and enterprises. | Hod Hasharon, Israel | Public, ALLT | $102.0m (FY2025) | ||
 Corero Network Security Corero Network Security provides automatic DDoS protection for businesses and service providers. | London, United Kingdom | Public, CNS | |||
 DDactic DDactic maps attack surfaces and tests DDoS resilience for enterprise infrastructure. | Israel, Israel | 2026 | Private | ||
 Flowtriq Flowtriq provides real-time DDoS detection and automatic mitigation for servers and network infrastructure. | Toronto, Canada | Private | |||
 Link11 Link11 provides DDoS protection and web application security services for companies. | Frankfurt am Main, Germany | Private | |||
M MazeBolt Technologies MazeBolt provides continuous, non-disruptive DDoS testing to validate enterprise DDoS defences. | Ramat Gan, Israel | 2013 | Private |
Also active in DDoS protection
11 companies| Company | Based in | Founded | Size | Ownership | Revenue |
|---|---|---|---|---|---|
 Microsoft Microsoft sells software, cloud services, hardware, and gaming products. | Redmond, United States | 1975 | 228,000 staff | Public, MSFT | $331.8bn (FY2026) |
 F5 F5 provides application delivery and security solutions for hybrid multicloud environments. | Seattle, United States | 1996 | Public, FFIV | $3.1bn (FY2025) | |
 Cloudflare Cloudflare provides a global network for security, performance, and full-stack development. | San Francisco, United States | 2009 | 2,440 staff | Public, NET | $2.2bn (FY2025) |
 Fastly Fastly provides an edge cloud platform that helps businesses deliver, secure, and deploy applications and AI workloads. | San Francisco, United States | 2011 | Public, FSLY | $624.0m (FY2025) | |
 Google World-renowned cybersecurity firm now part of Google Cloud, delivering threat intelligence-led penetration testing and red teaming informed by front-line incident response experience. | Mountain View, United States | 2004 | 500+ staff | Private | |
 Actus-Info Actus-Info is a Polish operator and integrator that provides a full range of telecommunications and IT services. | Wrocław, Poland | 2010 | Private | ||
 Amazon Web Services Amazon Web Services is a cloud computing platform that provides a wide range of services. | Seattle, United States | 2006 | Owned by Amazon | ||
 Imperva Imperva is a cybersecurity company that provides application security and data security. | San Mateo, United States | 2002 | Owned by Thales | ||
 Sucuri Sucuri provides cloud-based website security. | Menifee, United States | 2010 | Owned by GoDaddy | ||
 Transparent Edge Transparent Edge is a European content delivery network and edge computing platform that also provides web and application security. | Madrid, Spain | 2008 | Private | ||
 EfficientIP EfficientIP provides DNS, DHCP and IP address management software for network automation and security. | La Garenne Colombes, France | 2004 | Owned by Francisco Partners |
Recent deals in DDoS protection
All DDoS protection dealsAcquisitions come from SecurityWeek's monthly M&A round-ups from 2021 onwards, from Cybersecurity Ventures' quarterly M&A reports for 2020, and a few from Wikipedia lists. These are dated to the month. A few deals added from the news are dated to the day. Smaller deals may be missing. Amounts are in US dollars.
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