A reference guide that documents known vulnerabilities in SSL/TLS protocol versions and cipher suites for security professionals. The cheat sheet identifies vulnerable SSL/TLS versions including SSLv2, which is susceptible to exposure, tampering, man-in-the-middle attacks, and Bleichenbacher '98 attack. It covers SSLv3 vulnerabilities including BEAST and POODLE attacks that can decrypt data, and TLSv1.0 susceptibility to BEASTly attacks for data decryption. The resource documents the DROWN vulnerability that allows data decryption through key reuse across TLS versions. It also covers vulnerable cipher suites, specifically NULL ciphers that enable real-time exposure and tampering of data. This reference material serves as a quick lookup guide for identifying insecure SSL/TLS configurations and understanding associated attack vectors.