Crypto Exchange Security Ratings

Security Score Rankings

Our security scores are based on comprehensive evaluation of each exchange's security practices, track record, and transparency. Scores updated April 2026.

How We Rate Exchange Security

Our proprietary security score evaluates exchanges across these weighted categories:

Asset Protection (35%)

• Cold storage percentage: What portion of assets are kept offline?
• Insurance coverage: How much is insured against hacks?
• Multi-signature wallets: Are withdrawals protected by multiple keys?
• Key management: How are private keys generated and stored?

Track Record (25%)

• Hack history: Has the exchange ever been compromised?
• Incident response: How were past incidents handled?
• Years in operation: Longer track records inspire more confidence
• User fund recovery: Were users made whole after incidents?

Transparency (20%)

• Proof of reserves: Does the exchange prove solvency?
• Audit frequency: How often are reserves audited?
• Corporate structure: Public companies are more transparent
• Bug bounty programs: Does the exchange reward security researchers?

Account Security Features (20%)

• 2FA options: Authenticator app, hardware keys (YubiKey), biometrics
• Withdrawal whitelisting: Can you restrict withdrawal addresses?
• Anti-phishing codes: Email verification of legitimate communications
• Address verification: Confirmation steps before sending crypto
• Session management: Active device monitoring and timeout settings

Cold Storage Comparison

Cold storage means keeping cryptocurrency offline, disconnected from the internet. This is the most secure way to store digital assets because online (hot) wallets are vulnerable to hacking.

• Coinbase: 98% of customer funds in cold storage — industry-leading transparency
• Kraken: 95%+ in cold storage, with air-gapped signing ceremonies
• Gemini: 95%+ in cold storage, with HSM-protected keys
• Crypto.com: Claims 100% cold storage with institutional custody
• Binance: Does not publicly disclose exact cold storage percentage

Notable Exchange Hacks

Understanding past security incidents helps evaluate current risk:

Major Exchange Hacks Timeline

• 2014 — Mt. Gox: $460M stolen, exchange collapsed. The incident that shaped modern exchange security
• 2015 — Bitstamp: $5M stolen via social engineering. Exchange survived, improved security, and refunded users
• 2016 — Bitfinex: $72M stolen. Exchange issued recovery tokens and eventually repaid users
• 2019 — Binance: $40M stolen via API keys and phishing. Covered entirely by SAFU insurance fund. Users unaffected
• 2022 — Crypto.com: $34M stolen due to 2FA bypass. All users refunded within 24 hours
• 2022 — FTX: $8B+ in customer funds missing due to fraud (not a hack but a collapse)
• 2025 — Bybit: $1.4B stolen in sophisticated attack. Exchange covered losses from reserves

Exchanges Never Hacked

The following major exchanges have never suffered a security breach:

• Kraken (operating since 2011 — 15 years)
• Coinbase (operating since 2012 — 14 years)
• Gemini (operating since 2014 — 12 years)

Proof of Reserves

Proof of Reserves (PoR) is a cryptographic audit that proves an exchange holds enough assets to cover all customer deposits. After the FTX collapse, PoR became a critical trust metric.

How PoR Works

1. The exchange publishes a Merkle tree containing hashed customer balances
2. An independent auditor verifies the exchange's on-chain wallet balances
3. The auditor confirms total assets ≥ total liabilities
4. Individual users can verify their balance is included in the Merkle tree

PoR Status by Exchange

• Kraken: Bi-annual PoR audits by Armanino (one of the most thorough in the industry)
• Binance: Merkle tree PoR with on-chain verification. Published regularly
• OKX: Monthly PoR reports with Merkle tree verification
• Crypto.com: Regular PoR audits published on their website
• Coinbase: As a publicly traded company, Coinbase files audited financial reports with the SEC (equivalent or better than PoR)
• Gemini: SOC 2 Type 2 certification provides similar assurance through a different framework

How to Protect Yourself

Regardless of which exchange you use, follow these practices:

The "Don't Trust, Verify" Checklist

1. Don't leave large amounts on exchanges. Use exchanges for trading; store long-term holdings in a hardware wallet
2. Diversify across exchanges. Don't keep everything in one place
3. Verify proof of reserves. Check that your exchange publishes PoR and verify your balance is included
4. Monitor exchange health. Watch for withdrawal delays, communication changes, or unusual behavior
5. Use the strongest security features available. Hardware security keys > Authenticator app > SMS (never use SMS)
6. Enable withdrawal whitelisting. Only allow withdrawals to pre-approved addresses
7. Set up withdrawal delays. A 24-48 hour delay gives you time to react if compromised