A crypto exchange can be a useful place to buy, sell, and convert assets, but it is also one of the most common points of failure for ordinary users. The biggest losses rarely come from a dramatic trading error. They come from reused passwords, fake support accounts, rushed withdrawals, and leaving a large balance on an exchange that was meant to be temporary.
Crypto has a harsh feature that traditional banking users often underestimate: most transfers are final. Send funds to the wrong address, approve a malicious wallet connection, or give away a two factor authentication code, and there may be nobody who can reverse it.
Pick an Exchange Like You Are Picking a Financial Service
Security starts before you deposit anything. A polished app, a sponsorship deal, or a long list of tradeable coins tells you very little about how an exchange handles customer assets. Look for basic evidence that the business is real, accountable, and clear about its rules.
Start with its legal entity, the jurisdictions where it operates, and whether it is authorised or registered where you live, if that is required. Read the terms around custody, withdrawals, account closures, and dispute handling. These documents are not exciting, but they reveal whether the exchange can freeze withdrawals, how it treats dormant accounts, and what happens if it detects suspicious activity. A platform that makes this information hard to find deserves suspicion.
Check the exchange's security history too. Every large platform has outages and attempted attacks. What matters is how it responded. Did it explain what happened clearly? Were customers repaid after a breach? Did it improve controls, or did it mainly issue vague statements? Search for independent reporting, regulator notices, court filings where relevant, and long running user complaints. Ignore anonymous social posts unless they are supported by evidence, but do not dismiss repeated reports of blocked withdrawals or poor support.
Proof of reserves can be useful, provided you understand its limits. It may show that an exchange controlled certain wallet balances at a particular moment. It does not automatically prove the firm has no hidden liabilities, strong internal controls, or enough cash to handle a rush of withdrawals. It is one data point, not a safety certificate.
Also consider what protection exists for cash balances and crypto assets. Bank deposit protection, if available at all, may apply only to money held with a partner bank and subject to strict limits. Crypto holdings usually do not receive the same treatment.
Secure the Account Before You Fund It
Your exchange password should be unique, long, and generated by a password manager. This is non-negotiable. Reusing a password from an email account, shopping site, or old forum is one of the easiest ways to lose an exchange account. Criminals routinely test leaked credentials against financial services because they know many people reuse them.
Use a password manager to create a random password and store it securely. A memorable phrase can work if it is genuinely long and never reused, but most people overestimate how original their password is. Password managers are better at this job than human memory.
Turn on two factor authentication immediately. An authenticator app is usually a better choice than SMS codes because phone numbers can be hijacked through SIM swap fraud. A hardware security key is stronger still if the exchange supports it. Save recovery codes offline, ideally in a secure physical location. Do not store them in an unprotected notes app, cloud document, or email draft.
Protect the email address linked to the exchange with the same care. In practice, control of your email often means control of account recovery. Give that email a unique password and strong two factor authentication. If possible, use a dedicated email address for financial accounts, one you do not publish or use for newsletters, shopping accounts, and social media.
Enable every sensible account restriction the exchange offers. Withdrawal address allowlisting, sometimes called whitelisting, is particularly useful. It means withdrawals can go only to preapproved addresses, often after a waiting period. That delay can be frustrating, but it is exactly what makes it valuable if someone gains access to your account. Turn on login alerts, withdrawal notifications, anti phishing codes, and device management alerts too.
Review active sessions and approved devices every few months. Remove old phones, shared computers, and browsers you no longer use.
Treat Every Deposit and Withdrawal as a High Risk Action
Most irreversible crypto losses happen during transfers. The interface may make sending funds feel as simple as sending an email, but it is closer to wiring money to an account number that cannot be recalled. Slow down every time assets leave your control.
First, verify the asset and network. Many tokens exist on multiple networks, and exchanges may support only certain deposit routes. Sending the right token through the wrong network can lead to a complicated recovery process or a permanent loss. Do not rely on a ticker symbol alone. Confirm the network name shown on both the sending and receiving side, then read the exchange's deposit instructions.
For a new address, send a small test transaction first. This is not excessive caution for a meaningful transfer. Wait until it arrives, confirm the amount and network, then send the remainder. The transaction fee and extra few minutes are cheap insurance. Be especially careful with assets that require a memo, tag, or payment reference. Missing that field can prevent the exchange from crediting your deposit automatically.
Copying an address is safer than typing it, but it is not foolproof. Clipboard malware can replace a copied wallet address with one belonging to an attacker. After pasting, compare the first and last several characters with the address shown on the trusted source. For larger transfers, compare the full address or use a QR code generated from the official exchange app or website.
Never trust an address sent by a stranger through direct message, email, search advertising, or a comment thread. Scammers often impersonate customer support and instruct victims to move funds to a so called verification wallet, recovery wallet, or secure address. Legitimate exchanges do not need you to send crypto to prove ownership, unlock a withdrawal, pay a tax bill, or repair an account.
If you withdraw to self custody, understand the responsibility you are taking on.
Scammers Target Urgency, Not Technical Weakness
The most effective crypto scams do not require advanced hacking. They exploit fear, greed, embarrassment, and time pressure. Someone claims your account is under attack. A fake support agent offers immediate help. A social post promises a giveaway. A convincing website asks you to connect a wallet. The technical details change, but the pressure tactic stays the same.
Use bookmarked links or manually type the exchange address. Do not sign in from links in emails, text messages, search ads, or direct messages. Search advertising can place fraudulent sites above genuine results, and a familiar logo proves nothing. Check the web address character by character before entering login details. Fake domains often use subtle misspellings, extra words, or characters that resemble normal letters.
Real support teams do not contact users out of the blue through Telegram, WhatsApp, Discord, or X and ask for credentials, recovery phrases, remote access, or a transfer. Anyone asking for a one time authentication code is trying to take over your account. Anyone asking for your wallet recovery phrase is trying to empty your wallet. There is no legitimate exception.
Be skeptical of investment groups, signal services, copy trading pitches, and people who claim they can recover stolen crypto for a fee. Many recovery services are a second scam aimed at someone who has already suffered a loss. Do not install remote desktop software because a supposed support agent tells you to. That gives a stranger a direct view of your screen and often access to saved passwords or account sessions.
Watch for approval scams if you use decentralised apps alongside exchange accounts. A malicious smart contract can receive permission to spend certain tokens from your wallet. Before signing a wallet request, read what it is asking for. If the prompt is unclear, reject it.
Should I leave crypto on an exchange?
Keep only funds needed for trading, selling, or near term access on an exchange. For larger long term holdings, self custody can reduce exchange risk, but only if you can secure the recovery phrase and understand how the wallet works.
Is SMS two factor authentication safe enough?
It is better than using only a password, but an authenticator app or hardware security key is stronger. SMS can be exposed through SIM swap attacks, where a criminal takes control of your phone number.
What should I do if I sent crypto to the wrong network?
Contact the receiving exchange through its official support channel immediately and provide the transaction ID, asset, network, amount, and destination address. Recovery may be possible in some cases, but it is not guaranteed and may involve a fee.
Can an exchange support agent ask for my recovery phrase?
No. An exchange support agent should never need your wallet recovery phrase, password, two factor code, or remote access to your device. Treat any request for those details as a scam.