Intelligent CIO Africa Issue 27 | Page 67

t cht lk TECH TALK /////////////////////////////////////////////////// RE-THINKING DDOS DEFENCES FOR ENCRYPTION TECHNOLOGY TLS1.3 According to NETSCOUT Arbor, the arrival of TLS1.3, the latest advance in encryption technology, is going to require a re-think of certain mechanisms for detecting and mitigating some forms of Distributed Denial of Service (DDoS) attacks. D arren Anstee, Chief Technology Officer, NETSCOUT Arbor, says certain advances in encryption technology, including the latest version of the Transport Layer Security (TLS1.3), can make identifying and blocking some threats more difficult. He clarifies that, while encryption is an extremely valuable tool in any security arsenal – enabling users to ensure privacy when online or making mobile calls, and facilitating the secure storage and exchange of data, including personal information www.intelligentcio.com – it is simultaneously not a solution to all security issues, as it can be used to ill effect in ransomware. “Many network-based threat and fraud detection solutions have historically relied upon transparent, passive decryption of encrypted sessions via access to the server private key(s); with the introduction of TLS 1.3 this is not as simple,” said Anstee. Bryan Hamman, Territory Manager for Sub-Saharan Africa at NETSCOUT Arbor, added: “One of the key aims of encryption “ TLS IS USED TO SECURE DATA AS IT IS TRANSMITTED BETWEEN WEB BROWSERS AND SERVERS. INTELLIGENTCIO 67