Upbit, South Korea’s largest crypto exchange, has completed a major security upgrade. The platform now stores around 99% of users’ assets in cold wallets, keeping them completely offline. That leaves only a small fraction of the funds in hot wallets connected to the internet. This move follows a serious wake-up call. Earlier this year, hackers took 44.5 billion won from an Upbit hot wallet.
Since then, the company has moved forward rapidly. Checked your entire wallet system. It strengthened internal controls and has now almost completely eliminated online exposure. At the end of October, Upbit recorded 98.33% in cold storage and only 1.67% in hot wallets. The company now plans to take that hot wallet share even closer to zero.
Upbit surpasses South Korea’s legal security standard
Under South Korea’s Virtual Asset User Protection Law, exchanges must keep at least 80% of customer assets in cold wallets. Upbit already surpassed that rule long before the hack. However, this last measure goes far beyond compliance. While most local exchanges operate within the 82% to 90% cold storage range, Upbit leads the pack. Lawmakers confirmed that it currently has the lowest hot wallet ratio among all domestic platforms.
吴说获悉，韩国第一大加密交易所 Upbit 此前发生80% https://t.co/ITWTKz4Mu4
— 吴说区块链 (@wublockchain12) December 10, 2025
This matters more than it seems. Hot wallets allow for quick withdrawals, but they also carry higher risk. Cold wallets slow things down. However, they drastically reduce exposure to external attacks. By taking almost everything offline, Upbit is betting that security now matters more than speed. Even as cryptocurrency prices surged and trading activity recovered, Upbit still kept online exposure in check. That consistency has helped the stock market maintain confidence during a volatile year.
Why cold storage became a top priority
The recent hack changed the tone. Previously, cold storage was a matter of best practices. Now it’s about survival. After losing tens of billions of won in minutes, Upbit moved security from the back office to the front office. Company executives approved a full audit of its wallet system. Engineers rebuilt critical infrastructure. Security teams rewrote internal processes. The objective was simple. Reduce attack surfaces as much as possible.
Upbit also designed its new structure to scale. Even during peak deposits and withdrawals, the platform aims to keep online funds close to zero. That requires more automation, tighter internal signing controls, and tighter withdrawal controls. In short, the exchange is rebuilding the way money flows through its system.
Industry signal and user trust
Upbit’s decision sends a clear message to the broader crypto market. Security is no longer optional. It is the main product. CEO Oh Kyung-seok said the company will continue to maintain the lowest hot wallet usage in the country. He added that protecting clients’ assets is now at the heart of every company decision. For users, this update comes at the right time. Attacks continue to hit global exchanges every month. Trust remains fragile.
By blocking almost all funds offline, Upbit hopes to turn fear into trust. The strategy also raises the bar for competitors. If South Korea’s largest exchange can operate with near-zero hot wallet exposure, others could soon face pressure to follow. Currently, Upbit has made its choice clear. You will trade some speed for much more safety. In today’s crypto market, that may be the smartest bet of all.
The post Upbit Reviews Security with 99% of Assets Now in Cold Storage appeared first on Coinfomania.
