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Kraken, Coinbase, Gemini, OKX and Binance: how 5 exchanges handle security

Crypto exchange security in 2026 varies across Kraken, Coinbase, Gemini, OKX and Binance, from cold storage shares and proof of reserves to audits and breach history

A crypto exchange is only as safe as the systems behind it. A customer can check a few things. These include where coins are stored, whether the platform can prove it holds what it owes, who audits its books and whether its core systems have been breached. Those questions form the basis of this look at crypto exchange security in 2026.

Cold storage means keeping the private keys that control coins on devices with no internet connection. A remote attacker cannot reach offline keys the way they can reach keys on a connected server. Exchanges still hold a smaller share in online hot wallets to process withdrawals. The portion kept offline is a figure a platform can publish and a customer can compare.

Proof of reserves is a public accounting of the assets an exchange holds against customer balances. Its purpose is to show that deposits are backed one to one. Some platforms publish these reports on a regular schedule.

Account controls form a separate layer. Hardware security keys and settings locks limit what an intruder can change after stealing a password. Both protect the account itself rather than the exchange's wallets.

This slideshow covers five exchanges: Kraken, Coinbase, Gemini, OKX and Binance. They are a selection rather than a complete ranking. In one 2026 security comparison, Kraken, Coinbase and Gemini come out ahead. CoinGecko has assigned four of the five — Kraken, Coinbase, OKX and Binance — a trust score of 10/10. Each slide covers one platform, from a breach-free record to a public stock listing to an emergency fund.

The differences show up in the details. Some exchanges publish an exact cold storage share, while others describe their custody without a figure. One platform is still recovering from past high-profile security incidents. Another trades on the NYSE and must undergo third-party financial audits. A shared trust score does not mean shared safeguards.

Kraken security record: no core exchange hack since 2011

Kraken has operated a crypto exchange since 2011 without a platform-level breach. The comparison behind this list describes that record as zero core exchange hacks.

That record applies to the exchange's own systems and wallets. It does not rule out an individual account being taken over with a stolen........

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