In 2025, the cryptocurrency sector experienced $3.3 billion in losses due to hacks, according to on-chain data from CertiK. Supply chain vulnerabilities were the primary cause, with two significant breaches accounting for $1.45 billion of the total losses. The average loss per attack increased by 66% to $5.3 million, even as the number of attacks decreased by 162 compared to the previous year, indicating improved protocol defenses. Phishing fraud emerged as the second-largest threat, with 248 incidents resulting in $722 million in losses. The data suggests that while the frequency of attacks has diminished, the sophistication and impact of successful breaches have intensified, posing ongoing challenges for the crypto industry.