According to Eric Cryptoman, reflecting on portfolio losses from 2018, one of the most brutal days in crypto history, highlights the long-term resilience and recovery of the market. He underscores the missed opportunity in not investing in Solana's ($SOL) token sale, which has since experienced significant growth. This suggests that identifying and investing in promising blockchain projects during downturns can be advantageous for long-term portfolio performance.

According to ZachXBT, the Electrum Wallet hack in 2018 was a significant scam where attackers introduced malicious servers into the network. This led users to receive fraudulent prompts to update their wallet versions, which were actually malware. Traders should be aware of such tactics to protect their assets.