A Beginner’s Guide to Protecting Your Crypto After a Major Exchange Hack

If you have been following cryptocurrency news recently, you have likely seen headlines about major hacks. In February 2025 alone, the industry witnessed the $1.5 billion Bybit hack — the largest digital asset heist in history — and the $49.5 million Infini neobank exploit. These incidents can be alarming, especially if you are new to cryptocurrency and wondering whether your funds are safe. The good news is that there are straightforward steps you can take to significantly improve your security, even as a beginner. This guide walks you through everything you need to know.

The Basics

Cryptocurrency security fundamentally differs from traditional banking security. When you hold money in a bank, the institution is responsible for safeguarding your funds, and government-backed insurance programs like the FDIC in the United States protect deposits up to certain limits. In cryptocurrency, you are your own bank. The blockchain records your ownership of assets, but securing the private keys that control those assets is entirely your responsibility.

When you leave your cryptocurrency on an exchange like Binance, Coinbase, or Bybit, you are trusting that exchange to keep your funds safe. The exchange holds your private keys, not you. This is called custodial storage. While reputable exchanges invest heavily in security, the Bybit hack proved that even the largest platforms can be compromised through sophisticated supply chain attacks on their signing infrastructure.

With Bitcoin trading around $91,418 and Ethereum around $2,513 on February 24, 2025, even a small percentage of your portfolio at risk represents significant value. Understanding security basics is no longer optional — it is essential.

Why It Matters

The Bybit hack on February 21, 2025, demonstrated a new level of sophistication in cryptocurrency attacks. Hackers linked to North Korea compromised a Safe developer’s computer, injected malicious code into the interface used for signing transactions, and tricked Bybit into authorizing the transfer of 401,000 ETH. The attack was invisible to the exchange operators at the time of signing — the transaction appeared completely legitimate on their screens.

The Infini hack on February 24, 2025, revealed a different but equally important lesson: insider threats are real and dangerous. A former developer retained access to Infini’s smart contracts and used that access to drain $49.5 million from the platform. These two incidents together illustrate that threats can come from both external state-sponsored actors and internal personnel with elevated access.

Getting Started Guide

Step 1: Move your funds off exchanges. The single most effective thing you can do to protect your cryptocurrency is to transfer it to a wallet that you control. For small amounts, a software wallet (also called a hot wallet) like MetaMask or Trust Wallet provides reasonable security. For larger holdings, a hardware wallet is strongly recommended.

Step 2: Get a hardware wallet. A hardware wallet is a small physical device, similar to a USB stick, that stores your private keys offline. Because the keys never touch an internet-connected computer, they cannot be stolen by malware, phishing attacks, or exchange hacks. Popular options include devices from Ledger and Trezor. When setting up your hardware wallet, you will receive a seed phrase — typically 12 or 24 words — that can recover your wallet if the device is lost or damaged.

Step 3: Secure your seed phrase. Your seed phrase is the master key to your cryptocurrency. Anyone who has it can access your funds, regardless of what device or security measures you use. Write it down on paper or a metal backup plate, never store it digitally (no photos, no cloud storage, no password managers), and keep it in a secure physical location. Consider splitting it across two secure locations for redundancy.

Step 4: Enable strong authentication. For any exchange accounts you still maintain, enable two-factor authentication using an authenticator app (Google Authenticator, Authy) rather than SMS. SMS-based 2FA is vulnerable to SIM-swapping attacks, where an attacker convinces your mobile carrier to transfer your phone number to their device. Even better, use a hardware security key for 2FA.

Step 5: Be cautious with approvals. When you interact with decentralized applications (dApps), you often need to approve token spending permissions. These permissions can be exploited if the dApp is compromised or malicious. Always verify what you are approving, use the minimum necessary allowance rather than unlimited approval, and periodically review and revoke old approvals using tools like Revoke.cash.

Common Pitfalls

The most common mistake beginners make is leaving all their funds on an exchange for convenience. While exchanges make trading easy, they are high-value targets for hackers. Another frequent error is storing seed phrases digitally — taking a photo of your seed phrase or saving it in a notes app completely defeats the purpose of a hardware wallet.

Phishing attacks are another major risk. Scammers create fake websites that look identical to legitimate exchanges or wallet services, hoping to capture your login credentials or seed phrase. Always verify URLs carefully, bookmark the official sites you use regularly, and never enter your seed phrase on any website.

Next Steps

Once you have secured your funds with a hardware wallet and strong authentication, consider learning about multi-signature wallets for even greater security. Multi-sig wallets require multiple separate approvals before funds can be moved, making it extremely difficult for a single compromised key to result in a loss. Services like Safe (the same protocol involved in the Bybit hack, though the protocol itself was not compromised) offer user-friendly multi-sig solutions.

Stay informed about security developments in the crypto space. The threat landscape evolves constantly, and the best defense is awareness. Follow reputable security researchers and blockchain analytics firms on social media, and take the time to understand new attack vectors as they emerge.

Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Always conduct your own research before making any financial decisions.