Analyst coverage puts the DDoS protection market on an 14–18% annual growth path through the early 2030s — faster than most enterprise IT budgets grow. Here's what's driving that, what a DDoS attack actually is, and why a standard firewall — including Neurowall's own L3/L4 firewall — isn't the layer that stops one.
In Q3 2025, Cloudflare mitigated the largest DDoS attack ever reported — a scale that would have been unthinkable a decade ago, and one that keeps getting broken.
Attributed to the Aisuru botnet, estimated at 1–4 million infected hosts globally. Cloudflare's network automatically mitigated the attack despite its unprecedented size — in previous decades, DDoS attacks had rarely exceeded 1–2 Tbps. The jump from "rare to see over 1–2 Tbps" to "a single attack over 29 Tbps" in under ten years is the whole story of why DDoS defense keeps needing to scale.
The trend line matters more than any single record, since it keeps getting broken. Each entry below reflects a real, publicly documented incident.
Source: Cloudflare — Famous DDoS Attacks. Figures are as publicly reported by the mitigating parties at the time; attack scale records are broken frequently and should be read as illustrative of trend, not a definitive all-time ranking.
Whether a DDoS protection vendor can absorb an attack like the ones above comes down to one thing: does their network have more capacity than the attack generates? Cloudflare, for example, cites 321+ Tbps of network capacity — comfortably ahead of the largest attacks recorded. Cloudflare has also mitigated attacks with extreme packet rates (754 million packets/sec in June 2020) and extreme request rates (201M+ RPS in August 2023), plus HTTP/2 Rapid Reset specifically.
The vast majority of real-world DDoS attacks don't exceed 1 Gbps — nowhere near the terabit-scale headlines above. But even a small, unmitigated attack can take a site or application offline for extended periods if no DDoS defense is in place at all.
The upstream-capacity question (does the mitigating network out-scale the attack) is exactly the layer Neurowall is designed to complement, not replace — see where Neurowall fits below for the host/resource-exhaustion class of attack it's built to stop directly.
A Distributed Denial-of-Service (DDoS) attack floods a target with traffic from many sources at once, aiming to exhaust a resource — bandwidth, connection state, CPU, or application capacity — so legitimate users can't get through. "Distributed" is the key word: traffic arrives from thousands of hosts simultaneously, which is what makes source-IP blocking alone an incomplete defense.
Neurowall doesn't rely on one generic flood filter. Each attack shape gets its own detection logic, running at the XDP layer before the packet reaches connection state or application code.
Market-size estimates vary by methodology and scope, but every major analyst agrees on the direction and the driver: attack frequency and sophistication are outpacing organic IT security spend.
2025 to 2034 forecast, 18.0% CAGR (2026–2034). North America holds 38.2% share in 2025; Asia-Pacific is the fastest-growing region.
View report →2025 to 2035 forecast, 13.9% CAGR (2026–2035). Software-based solutions are the strongest-growing offering segment.
View report →2021 actual to 2033 forecast, 18.7% CAGR (2025–2033). North America leads regional growth momentum; Asia Pacific and MEA close behind.
View report →| Source | Base Year | Base Size | Forecast Year | Forecast Size | CAGR |
|---|---|---|---|---|---|
| Straits Research | 2025 | $5.5B | 2034 | $24.4B | 18.0% |
| Expert Market Research | 2025 | $4.6B | 2035 | $16.8B | 13.9% |
| Grand View Research | 2021 | $3.8B | 2033 | $20.3B | 18.7% |
Figures from Straits Research and Expert Market Research, plus Grand View Research's independent coverage. Different firms, different methodologies, different forecast windows — shown together to illustrate directional agreement (double-digit CAGR, sustained growth through the early 2030s), not to imply a single reconciled figure.
CAGR ranges from 13.9% (Expert Market Research) to 18.7% (Grand View Research) — no report puts growth in single digits.
Every forecast puts the market at 4 to 5 times its current size by the early-to-mid 2030s, regardless of the base year used.
Cloud-delivered and software-based protection are called out as the fastest-growing segments across all three reports — on-prem appliance spend is the slower-growing category.
North America holds the largest current share (regulatory drivers), while Asia-Pacific is consistently flagged as the fastest-growing region.
NETSCOUT recorded roughly 10 million DDoS attacks globally in 2022. India's CERT-In reported a 668% year-over-year increase in DDoS attacks the same year. Check Point Research found a 50% jump in attacks against healthcare specifically.
Every new connected device is a potential botnet node. Analysts consistently name IoT proliferation as a structural driver, not a one-time spike.
Workloads moving to cloud and hybrid environments are directly internet-reachable in ways on-prem, perimeter-walled infrastructure wasn't — cloud deployment is the largest and fastest-growing segment in both reports.
North America's lead share is tied partly to compliance mandates (HIPAA, CCPA) that push regulated industries — BFSI and healthcare especially — to formalize DDoS protection spend rather than treat it as discretionary.
This applies to Neurowall's own L3/L4 firewall too, and it's worth being direct about why: a stateful firewall's job is to evaluate connections against policy — allow, deny, track state. That's a per-connection decision. A DDoS attack isn't a policy violation on any single connection; it's volume and rate across thousands of them at once. Stopping it requires dedicated flood detection and rate-limiting logic sitting in front of — or alongside — the firewall path, not the firewall rule engine itself.
This is exactly why Neurowall ships DDoS protection as a distinct module set — token-bucket rate limiting plus SYN, ACK, ICMP, FIN, RST, and UDP-cost-specific flood detection — that runs at the XDP layer, ahead of and alongside firewall policy evaluation, not inside it.
A firewall answers "is this connection allowed?" DDoS protection answers "is this rate of allowed-looking traffic itself the attack?" They're different questions, and most gateway firewalls — commercial or open-source — don't ship an answer to the second one.
Neurowall's DDoS protection runs at the XDP layer — the Linux network driver, before the kernel allocates memory for a packet. Malicious traffic is dropped before it costs anything downstream, while firewall policy and threat intelligence continue evaluating the traffic that's actually allowed through.
Benchmarks measured on Neurowall's own test infrastructure — see the full benchmark summary for methodology. These figures reflect host/network-resource exhaustion scenarios (traffic that has reached the box), not upstream link-saturation attacks that fill a constrained internet connection before reaching any on-box mitigation — that class of attack needs ISP- or cloud-scrubbing capacity upstream, and Neurowall is designed to complement that layer, not replace it.