How ADS Turns the Tide Against DDoS Attacks: Real Cases and Detection Techniques

According to the 2015 H1 NSFOCUS DDoS Threat Report, large‑scale network attacks are on the rise, exemplified by the Hammer phone launch and the Apple iPhone 6s pre‑order outage, both disrupted by massive DDoS traffic.

What Is a DDoS Attack?

A DDoS attack floods a target with illegitimate traffic that mimics normal users, overwhelming servers and preventing genuine customers from accessing services.

How ADS Detects and Mitigates DDoS

1. Anti‑spoofing : Verifies the correctness of packet addresses and ports and performs reverse probing.

2. Protocol‑stack behavior analysis : Checks each packet against RFC specifications and drops non‑conforming traffic.

3. Specific application protection : Identifies characteristic patterns of malicious flows, similar to spotting a disruptive shopper.

4. User‑behavior analysis : Detects synchronized, repetitive requests that differ from random legitimate browsing.

5. Dynamic fingerprinting : Uses encrypted tokens or signatures to reject traffic that cannot present the proper credential.

6. Bandwidth control : Limits the maximum output of suspicious flows, reducing downstream pressure.

By applying these techniques, ADS can accurately isolate and block illegal traffic, helping services like Apple’s pre‑order system stay operational during attacks.

Conclusion

As DDoS tools become more powerful, the frequency and scale of attacks will continue to grow, making robust detection and mitigation solutions essential for protecting online business continuity.