DDoS is a distributed attack in which many devices simultaneously flood a server with requests to overload it and make it unavailable to ordinary users. It is a frequent threat to crypto exchanges and pools.

A DAO is a decentralized autonomous organization governed by rules written into smart contracts and by collective decisions of its participants, rather than by the usual board of directors and management.

A dump (Dump) is a mass sale of an asset aimed at sharply lowering its price in a short time. It is often carried out by large holders and frequently serves as part of manipulative schemes.

A Doubler is a type of high-risk project that promises to double the invested funds in a short time. Such schemes belong to the dubious category and are extremely dangerous for an investor.

A gap (Gap) is a price gap on a chart, when a quote opens sharply above or below the previous closing level. It arises from changes in the market situation during a period when trading was not taking place.