#StaySAFU is a common hashtag in the cryptocurrency world and is used as a call for awareness and caution, meaning "stay safe" in a potentially risky environment such as fraud, hacks, or fraudulent projects. The origin of the expression dates back to the Binance platform when it announced the "SAFU" fund to protect users' funds. The hashtag is used to remind investors to follow security practices such as using cold wallets, enabling two-factor authentication, and avoiding suspicious links or unreliable projects.