DOSarrest
DOSarrest Internet Security Ltd. provides cloud-based DDoS protection and mitigation services for BFSI and enterprise customers, operating as a subsidiary of German cybersecurity provider Link11 GmbH since January 2021 across Germany, UK, and North America.
- Company typePrivate
- Founded2007
- HeadquartersRichmond, Canada
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What DOSarrest does
DOSarrest Internet Security Ltd. is a DDoS protection and mitigation service provider founded in 2007 in Richmond, Canada. The company's core offering is a cloud-based DDoS protection service that safeguards internet infrastructure against distributed denial-of-service attacks across volumetric, protocol, and application-layer vectors. Following its acquisition by German cybersecurity provider Link11 GmbH in January 2021, DOSarrest now operates as a subsidiary brand within Link11's portfolio, with all customer support and services handled directly by Link11. The firm's website redirects to Link11's portal, and the company maintains regional phone contacts in Germany (Frankfurt headquarters at Lindleystraße 12), UK & International, and North America (+1 888 818 1344).
The company generates revenue through subscription-based recurring security services for DDoS protection, targeting primarily BFSI and mid-market enterprise organizations that require mitigation against rising DDoS attack frequency and IoT-based attack vectors. Its go-to-market is enterprise field sales, executed through Link11's direct sales organization, with marketing handled via Link11's website, blog, and press channels. DOSarrest's technology integrates with Link11's broader cybersecurity infrastructure, enabling cloud-based mitigation that leverages collective threat intelligence across the combined customer base. Headcount is reported at 11-50 employees, and the firm holds UK incorporation as DOSarrest Internet Security Ltd., operating under German parent ownership.
DOSarrest competes in a growing global DDoS protection market valued at $3.95B in 2023 and projected to reach $17.53B by 2032 (CAGR ~18%), with the European segment specifically valued at $0.90B in 2024 and projected at $2.73B by 2033 (CAGR ~13%). Leadership is anchored by founder Mark Teolis, CTO Jag Bains, and Director of Sales and Marketing Brian Mohammed. The firm has no disclosed patents, certifications, awards, or independent research publications in the provided data, and its strategic positioning is now functionally subordinate to Link11's broader portfolio decisions.
DOSarrest firmographics
Firmographics- Name
- DOSarrest
- Legal name
- DOSarrest Internet Security Ltd.
- Website
- https://dosarrest.com
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- DOSarrest Internet Security Ltd. provides cloud-based DDoS protection and mitigation services for BFSI and enterprise customers, operating as a subsidiary of German cybersecurity provider Link11 GmbH since January 2021 across Germany, UK, and North America.
- Ownership category
- akta.pro rank
DOSarrest industry classification
Industry- Product category
- DDoS Protection Services
- NAICS
- Computer Facilities Management Services (541513), Investigation and Security Services (5616)
- SIC
- Services-Computer Programming, Data Processing, Etc. (7370), Communications Services, Nec (4899)
- akta.pro primary industry
- DDoS Protection & Mitigation (HDADABAG)
- akta.pro secondary industries
- Edge Security Delivery (DDoS, WAF, Bot Mitigation at Edge) (HDABAGAH), DDoS Mitigation & Traffic Scrubbing (Edge/ADC‑Adjacent) (HDAFAHAJ)
Keywords
Where DOSarrest is headquartered
LocationHeadquarters
- HQ city
- Richmond
- HQ country
- Canada
- HQ region
- North America
Offices1 record
Markets served
DOSarrest business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Infrastructure, Personnel, Operations, Marketing or Sales
Revenue model
- DDoS Protection Services: DOSarrest provides DDoS protection and mitigation services as part of Link11's cybersecurity portfolio. Revenue is generated through subscription-based security services, with all services including customer support now handled directly by Link11 since the acquisition in January 2021.
Go-to-market motion1 record
Distribution channels2 records
Marketing channels2 records
DOSarrest product offering
Product offeringCore offering
DOSarrest provides DDoS protection and mitigation services that safeguard internet infrastructure against distributed denial-of-service attacks. The service is delivered as a cloud-based solution offering 24/7 security monitoring and incident response. Since January 2021, all services and customer support have been handled directly by German cybersecurity provider Link11 GmbH following its acquisition of DOSarrest Internet Security Ltd.
Product overview
DOSarrest offers a single unified DDoS protection and mitigation service. Originally operated as a standalone product, DOSarrest Internet Security Ltd. was acquired by German cybersecurity provider Link11 GmbH in January 2021. All services, including customer support, are now handled directly by Link11, integrating DOSarrest's DDoS protection capabilities into Link11's broader cybersecurity portfolio. The service provides internet security protection against denial-of-service attacks.
Differentiator
Problem solved
Functional benefit
Products and services
- DOSarrest DDoS Protection Services Cloud-based DDoS protection and mitigation service that safeguards internet infrastructure against distributed denial-of-service attacks. The service provides 24/7 security monitoring and incident response for enterprise customers and is now operated by Link11 GmbH.
Companies that use DOSarrest
Customer profileSegments2 records
Ideal customer profiles2 records
DOSarrest technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
DOSarrest partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Link11 GmbHcoreDOSarrest Internet Security Ltd. has been part of the German cybersecurity provider Link11 GmbH since January 2021. All services including customer support are now handled directly by Link11, representing an acquisition/ownership relationship where DOSarrest operates as a subsidiary or brand under Link11's cybersecurity portfolio.
Scale indicators2 records
Recent moves4 records
Expansion highlights3 records
DOSarrest competitors and assessment
Company assessmentDirect peers
- Cloudflare: Cloudflare offers enterprise-grade DDoS protection as part of its global edge network, directly competing with DOSarrest's cloud-based mitigation service for the same BFSI and enterprise customers.
- Nexusguard: Nexusguard specializes in cloud-based DDoS mitigation and protection services, serving carriers and enterprises — closely matching DOSarrest's pure-play DDoS positioning.
- Akamai (Prolexic): Akamai's Prolexic platform is a leading dedicated DDoS mitigation service with global scrubbing capacity, directly comparable to DOSarrest's offering for enterprise and BFSI buyers.
- Corero Network Security: Corero provides real-time DDoS protection solutions for hosting providers and enterprises, directly comparable to DOSarrest as a focused DDoS mitigation vendor.
- Radware: Radware provides DDoS protection, bot management, and application security delivered as cloud and hybrid services — a direct peer to DOSarrest in the network security mitigation niche.
- F5 (Silverline DDoS Protection): F5's Silverline DDoS Protection offers managed, cloud-based DDoS mitigation for enterprises, directly comparable to DOSarrest's subscription DDoS service in delivery model and target buyer.
Broad incumbents
- Azure DDoS Protection: Microsoft's Azure DDoS Protection provides always-on mitigation for Azure-hosted applications, competing with DOSarrest in the enterprise DDoS market as part of a broader cloud platform.
- Imperva: Imperva offers application and API protection including DDoS mitigation within a broader cybersecurity suite, comparable to DOSarrest for enterprise buyers seeking DDoS as part of wider security.
- AWS Shield: AWS Shield is AWS's managed DDoS protection service for workloads on AWS, representing a broad incumbent offering that overlaps with DOSarrest's mitigation capability for enterprise customers.
Others
- Link11 GmbH: Link11 is DOSarrest's parent company since the 2021 acquisition and operates the same DDoS mitigation technology and customer base; included as an ecosystem/parent reference rather than a competitor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
DOSarrest social profiles
Digital presenceDOSarrest financial estimates
Financial estimateRevenue estimate
Valuation estimate
DOSarrest leadership team
Management profileNumber of profiles
Profiles3 records
DOSarrest funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
DOSarrest M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about DOSarrest
What does DOSarrest do?
DOSarrest provides DDoS protection and mitigation services that safeguard internet infrastructure against distributed denial-of-service attacks. The service is delivered as a cloud-based solution offering 24/7 security monitoring and incident response. Since January 2021, all services and customer support have been handled directly by German cybersecurity provider Link11 GmbH following its acquisition of DOSarrest Internet Security Ltd.
Is DOSarrest a public or private company?
DOSarrest is a private company. It is classified as corporate owned and is currently operating.
When was DOSarrest founded?
DOSarrest was founded in 2007. It employs 11 to 50 people.
Where is DOSarrest based?
DOSarrest is headquartered in Richmond, Canada, in the North America region.
How does DOSarrest make money?
One revenue line is on record: DDoS Protection Services.
Who are DOSarrest's main competitors?
Direct peers on record are Cloudflare, Nexusguard, Akamai (Prolexic), Corero Network Security, Radware and F5 (Silverline DDoS Protection). Broad incumbents are Azure DDoS Protection, Imperva and AWS Shield. Link11 GmbH is listed as an others.
Does DOSarrest have an API?
No public API is recorded for DOSarrest.
What industry is DOSarrest in?
DOSarrest's product category is DDoS Protection Services. Its primary akta.pro industry code is HDADABAG, DDoS Protection & Mitigation, with a secondary code of HDABAGAH, Edge Security Delivery (DDoS, WAF, Bot Mitigation at Edge). Its NAICS code is 541513 and its SIC code is 7370.