What is Denial-of-Service Attack

A denial-of-service (DoS) assault is a type of cyber-attack that attempts to prevent a server or network from functioning normally. This sort of attack is frequently initiated on more traditional server-based systems by a rogue computer flooding a server with bogus traffic in order to cause it to malfunction or go down. A "Distributed Denial-of-Service attack" is one that comes from several machines at the same time (DDoS attack). DDoS attacks rely on the distribution of harmful software, which is uploaded to the servers of unsuspecting individuals. These servers are then utilised to continue the attack. On a bitcoin blockchain, this form of DoS attack is possible. The number of times nodes on a blockchain may register transactions is restricted. This allows attackers to overburden the system, with minor transactions that need the same amount of time to complete as larger, genuine transactions This slows down the blockchain and enables attackers to carry out numerous types of hacks. However, due to transaction costs, this method is often expensive in the long run for fraudulent users.

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Blockchain

A blockchain is a subset of a distributed database. The Bitcoin inventors originally prototyped the system in 2008. This modern database is made up of separate blocks that are connected together in a chronological chain. Blockchains may be used to store a wide range of data types. It has mostly been utilized as a public ledger for bitcoin transactions to date. A peer-to-peer network comprised of independent nodes uses a consensus process to ensure the blockchain's security and legitimacy. Each node in the network keeps a public and immutable copy of the data.

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2 Factor Authentication (2FA)

2 Factor Authentication is a security measure with two layers. It is used by the majority of cryptocurrency exchanges. To log in, you must provide not only a password, but also a code obtained, for example, from the Google authenticator.

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Airdrop

An airdrop is a method of distributing coins. End users can typically obtain coins for free or in exchange for doing a small task, such as subscribing to a newsletter, sending a tweet, or inviting others via a personal affiliate link. Cryptocurrency airdrops — the act of depositing cryptocurrency into public crypto wallets — are utilized as a marketing, liquidity creation, and network bootstrapping technique for many different types of blockchain initiatives.

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Altcoin

Altcoin - "alternative coin" - is any kind of digital currency other than Bitcoin. Since the launch of Bitcoin, the world's first digital currency, many altcoins (as well as supporting blockchains) have been created. Altcoin digital currencies share many similarities to Bitcoin, but consistently and have significant differences. There are about 20,000 altcoins, and this number is expected to grow significantly in the coming years. Altcoins often develop Bitcoin features. Ethereum, currently the most widely used blockchain, supports digital contracts and separate applications where Bitcoin does not. Altcoins are also often created to cater to the needs of different users. The Litecoin blockchain, for example, can process payments quarterly for the duration of Bitcoin.

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Cold Storage

Cold storage is the way to store cryptocurrency offline.  The word refers to the use of offline wallets that are not connected to the internet. Cold storage is the most secure way to keep cryptocurrencies since an offline currency becomes less likely to be hacked and stolen. Paper wallets, printed renditions of private keys, and offline hardware and software wallets are all examples of cold storage.

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