Radware, Ltd.

Eyal Rundstein

David Aviv

Ehud Doron

Lev Medvedovsky

Ronit Lubitch Greenberg

Avishay Balderman

Sharon Shitrit-Efergan

A method and system for detecting domain name system (DNS) recursive cyber-attacks are presented. The system includes learning a plurality of baselines of at least rates and rate invariants of DNS features; monitoring DNS traffic directed to and from a DNS resolver, wherein the DNS resolver is communicatively connected between at least one client and at least one name server; analyzing the monitored DNS traffic using at least one detection function to detect an anomaly based in part on at least one baseline of the plurality of learnt baselines; and upon detection of at least one anomaly, performing at least one mitigation action to filter out incoming DNS queries to a domain name under attack.

Detection and mitigation of recursive domain name system attacks

A method for detecting DoS attacks using an encrypted communication protocol includes estimating traffic telemetries of packets of at least ingress traffic passing over an insecure network that is directed to a protected entity by analyzing TCP headers of the packets, the packets using an encrypted version of a non-encrypted communication protocol, the packets being intended for the protected entity; providing at least one rate-based feature and at least one rate-invariant feature based on the estimated traffic telemetries, wherein the rate-based feature and the rate-invariant feature demonstrate a normal behavior of the traffic; and executing a mitigation action when a potential flood DoS attack using the encrypted communication protocol is detected by an evaluation of each of the at least one rate-based feature and the at least one rate-invariant feature with respect to respective baselines to determine whether the behavior of the ingress traffic indicates a potential flood DoS attack.

Method and system for detecting and mitigating HTTPS flood attacks

A method and system for protecting against quick UDP Internet connection (QUIC) based denial-of-service (DDoS) attacks. The system comprises extracting traffic features from at least traffic directed to a protected entity, wherein the traffic features demonstrate behavior of QUIC user datagram protocol (UDP) traffic directed to the protected entity, wherein the extract traffic features include at least one rate-base feature and at least one rate-invariant feature, and wherein the at least traffic includes QUIC packets; computing at least one baseline for each of the at least one rate-base feature and the at least one rate-invariant feature; and analyzing real-time samples of traffic directed to the protected entity to detect a deviation from each of the at least one computed baseline, wherein the deviation is indicative of a detected QUIC DDoS attack; and causing execution of at least one mitigation action when an indication of the detected QUIC DDoS attack is determined.

Detection and mitigation DDoS attacks performed over QUIC communication protocol

A method for detecting hypertext transfer protocol secure (HTTPS) flood denial-of-service (DDoS) attacks. The method estimating traffic telemetries of at least ingress traffic directed to a protected entity; providing at least one rate-base feature and at least one rate-invariant feature based on the estimated traffic telemetries, wherein the rate-base feature and the rate-invariant feature demonstrate a normal behavior of HTTPS traffic directed to the protected entity; evaluating the at least one rate-base feature and the at least one rate-invariant feature with respect to at least one baseline to determine whether the behavior of the at least HTTPS traffic indicates a potential HTTPS flood DDoS attack; and causing execution of a mitigation action when an indication of a potential HTTPS flood DDoS attack is determined.

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Givataim, Israel

Eyal Rundstein