Crypto Currency Is The Flag (CCTF) are hackers with the goal of promoting web3 and cryptocurrencies, and as a result, they are hosting the biggest crypto CTF ever. Back in 2019, six was bored and alone at home, watching at his computer screen as bitcoin continued to fall, setting record low after record low. The challenges range from basic hacking tasks like password cracking, steganography, or online exploitation to more complex blockchain-related tasks like hacking smart contracts, DeFi front running, and taking advantage of improperly designed RSA.