𝗭𝗲𝗿𝗼 𝗗𝗮𝘆 𝗢𝗽𝗲𝗿𝗮𝘁𝗶𝗼𝗻𝘀 𝗟𝗟𝗖 is a cybersecurity research group specializing in legal penetration testing and responsible vulnerability disclosure