Sign in

Products

For Traders

Spot Trading

Trade crypto with deep liquidity, advanced charts, stop orders.

Trading API

Automate your cryptocurrency trading with reliable and stable API.

For Everyone

Instant buy

Buy crypto with your credit or debit card in a a few clicks.

Wallet

Buy, sell, store, and earn crypto. For everyone.

Earn

Get monthly rewards for simply holding stake-able coins.

Cedex Swap

Seamless crypto swaps from your Web3 wallet

For Businesses

Prime

A complete institutional-grade ecosystem from CEX.IO Group.

Topics

ATM Bitcoin Blockchain Blockchain Buy and Sell Crypto CEX.IO CEX.IO Prime Consensus Cryptocurrencies Cryptocurrencies Cryptocurrencies Cryptography DeFi Economics Ethereum Fundamental Fundamental Fundamental History Investing Investing Investing Margin trading Margin trading MiCA NFT Privacy Regulations Reviews Security Staking Technical Analysis Technical Analysis Trading Trading Trading Uncategorized Uncategorized Wallet Weekly Digest

See All Topics

Community

Cryptocurrency glossary

Search for:

Sign in Register

Back

Reentrancy attack

University

Made with love for the cryptocurrency community by the people of CEX.IO.

Discover

Getting started Articles Glossary

Company

Terms & Conditions Privacy Policy Cookie Policy Disclaimer Contact

Products

Exchange Wallet Earn

Follow

CEX.IO Status

CEX.IO Corp., CEX OVRS LLC, and CEX.IO EUROPE, S.L. are collectively managing the CEX.IO platform.

CEX.IO Corp. (NMLS# 1804170) serves United States residents only in jurisdictions where it is licensed to operate as a Money Service Business (MSB Activities 409 499). Registered address: 100 SE 2nd St, Suite 3852 Miami, Florida, 33131, USA. For the list of the US licenses and registrations, see the US Licenses and Registrations page.

CEX.IO Markets UK Ltd (company number 15140258) serves UK resident customers under the applicable Terms of Use. Registered office address: 78-79 Pall Mall, London, England, SW1Y 5ES. CEX.IO Markets UK Ltd is registered with the Financial Conduct Authority as a cryptoasset business under the Money Laundering Regulations, firm reference number 1007192, for certain cryptoasset activities.

CEX OVRS LLC (No. L 22275), serves customers all over the world except from the countries which are specified in the respective Terms of Use. Registered office address: Suite 1, A.L. Evelyn LTD Building, Charlestown, Nevis.

CEX.IO EUROPE, S.L. (NIF: B72550395) with its registered office address at Paseo de la Castellana, 53 1a, 28046 Madrid, España, registered as the Provider of Virtual Currency Exchange Services for Fiat Currency by the Bank of Spain.

The availability of the products, features, and services on the CEX.IO platform is subject to jurisdictional limitations. CEX.IO may not offer certain products, features, and services on the CEX.IO platform in certain jurisdictions due to potential or actual regulatory restrictions. For more information, see our Licenses and Registrations.

The web content provided by CEX.IO is for educational purposes only. The information and tools provided neither are, nor should be construed as, an offer, or a solicitation of an offer, or a recommendation, to buy, sell or hold any digital asset or to open a particular account or engage in any specific investment strategy.

Digital asset markets are highly volatile and can lead to loss of funds.

CEX.IO Corp. is not a registered broker-dealer or FINRA member. Crypto is not insured by the Federal Deposit Insurance Corporation (FDIC) or the Securities Investor Protection Corporation (SIPC).

Taxes may be payable on any return and/or on any increase in the value of your digital assets and you should seek independent advice on your tax obligations.

All materials and promotional content on this website are intended solely for non-UK users. They are not directed at, or available for use by, persons in the United Kingdom and should not be construed as a UK financial promotion.