Abstract: A method and system for mitigating encrypted distributed denial of service (DDOS) attacks comprising: receiving a detection of an encrypted DDOS attack from an encrypted transaction related traffic, wherein the encrypted DDOS attack is associated with a plurality of transport layer security (TLS) fingerprints (FPs); classifying each of the plurality of TLS FPs as a type of FP based on a comparison of rate-invariant values to a native FP baseline, wherein the rate-invariant values are associated with the plurality of TLS FPs; selecting anomalous FPs as a subset of the plurality of TLS FPs; generating a real time signature (RTS), for the encrypted DDOS attack, having at least one unknown type of FP of the subset of anomalous FPs; and mitigating the encrypted DDOS attack based on the generated RTS.

Abstract: A method and system for mitigating encrypted distributed denial of service (DDoS) attacks comprising: receiving a detection of an encrypted DDoS attack from an encrypted transaction related traffic, wherein the encrypted DDoS attack is associated with a plurality of transport layer security (TLS) fingerprints (FPs); classifying each of the plurality of TLS FPs as a type of FP based on a comparison of rate-invariant values to a native FP baseline, wherein the rate-invariant values are associated with the plurality of TLS FPS; selecting anomalous FPs as a subset of the plurality of TLS FPs; generating a real time signature (RTS), for the encrypted DDoS attack, having at least one unknown type of FP of the subset of anomalous FPs; and mitigating the encrypted DDoS attack based on the generated RTS.

Abstract: A method and system for detecting encrypted distributed denial of service (DDOS) attacks are provided. The system includes monitoring encrypted transactions related traffic; deriving from the encrypted transactions rate-based parameters and rate-invariant parameters, wherein the rate-based parameters and rate-invariant parameters are associated with transport layer security (TLS) fingerprints; comparing values of the rate-based parameters and the rate-invariant parameters respectively to at least one rate-based anomaly threshold and at least one rate-invariant anomaly threshold; and declaring a detected encrypted DDOS attack when both the rate-based anomaly threshold and the rate-invariant anomaly threshold are exceeded.