1. Regular expression denial of service - ReDoS. https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS. Regular expression denial of service - ReDoS. https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS.
2. SSL renegotiation DoS. https://www.ietf.org/mail-archive/web/tls/current/msg07553.html. SSL renegotiation DoS. https://www.ietf.org/mail-archive/web/tls/current/msg07553.html.
3. Dynamic program slicing
4. Causal memory: definitions, implementation, and programming
5. Akamai. Cloud security. https://www.akamai.com/us/en/cloud-security.jsp. Akamai. Cloud security. https://www.akamai.com/us/en/cloud-security.jsp.