Wallets such as Bitcoin Core and Electrum have all had modified packages posted by phishing websites for users to download, resulting in currency theft.

If you pay online using cryptocurrencies, Electrum is ideal for keeping a small amount of currency ready for use.

Earlier this month, Electrum detected a DoS attack on its network, allegedly launched by a malicious botnet with more than 140,000 machines, designed to provide Electrum to users.

Last month, GitHub discovered a fake Electrum wallet called "Electrvm" designed to steal user funds. In February this year, the wallet was encrypted.

raise Invalid DataException ("Address is not valid")

It's not hard to run your own Electrum server and point your wallet to just use it. This restores Electrum to the point where it has the same privacy and security attributes as the full node, where no one else can see the address or transaction that the wallet is interested in. Electrum then becomes an all-node wallet.

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Note: Electrum-XZC is derived from Electrum and uses different seed phrase criteria, so it cannot be imported.

Code protocols have been submitted more than 600 times by nine developers in the past year. Dash improvement protocols have been largely inactive over the past year (bottom, below). DASH Core v0.15 was released in February with improvements to the local UI, memory pool synchronization, and PrivatSend. Electrum, Android and iOS wallets are also updated regularly.