On December 28, deBridge co-founder Alex Smirnov criticized Flow's blockchain rollback, executed without coordination with key partners, following a $3.9 million exploit. The rollback removed around six hours of activity and Flow halted new transaction validations, while requests for freezes were sent to major exchanges and users were told to resubmit transactions.

Upbit suspended Flow FLOW transactions on December 27 after signs of a security issue on the Flow mainnet, and DAXA issued a trading risk warning. The token reportedly fell about 40% around the announcement. At the time, FLOW traded near $0.12 with notable 24-hour volume, highlighting elevated volatility.

On December 28, deBridge co-founder Alex Smirnov criticized Flow blockchain's rollback, warning that poor coordination could inflict larger economic losses than the original exploit and create systemic risks for ecosystem partners. The incident coincided with a FLOW token slump of more than 40%, while the Flow Foundation's engineering teams started working with network participants on measures such as potential asset freezes.

On December 28, DeBot disclosed a wallet security breach involving compromised private keys and about $255,000 in unauthorized transfers. The team says it will fully compensate affected users, is monitoring impacted accounts, and warns against fake claim forms. Community responses urged moving funds to secure addresses as the attacker consolidates stolen assets.

On-chain analyst Specter claims that a crypto wallet linked to influencer Andrew Tate moved $30 million into privacy protocol Railgun over a two-year span. The traced funds allegedly show laundering-style patterns tied to a Texas "pig butchering" fraud case, while Railgun's RAIL token recorded a 4.03% price move amid scrutiny. Tate has not been named as a defendant and no formal enforcement actions were reported at the time.

Cardano founder Charles Hoskinson highlighted Solana's fast execution and upgrade agility compared with Ethereum's more methodical roadmap. He noted Solana's momentum in tokenized assets, while Ethereum retains leadership in TVL and stablecoin usage. Separately, CoinMarketCap listed ADA at $0.37 with a market cap around $13.27 billion as of December 28, 2025.

On December 28, Trust Wallet CEO Eowyn Chen said the browser extension investigation is ongoing and Google has escalated the support ticket, while a new alert now warns users to migrate if a wallet is compromised. The company reports more than 2,630 claims and losses of $1.05M–$3.5M, prioritizing ownership verification to deter fraud.

On December 27, 2025, Lighter, a Solana-based perpetuals DEX, said on Discord it completed Season 2 points and removed sybil, self-trading, and wash-trading. The communication referenced "S3e," fueling expectations of a Season 3 tied to TGE, with airdrop claim links inactive and 25% of token supply indicated for user distribution.

Bit.com said it will begin winding down operations on December 27, 2025, and complete its User Asset Migration Plan to Matrixport by March 31, 2026. Under the plan, new registrations halt immediately and spot trading will end by late January 2026.