Another idea is optional type and delete nil, but these will never happen in version 2.0 of the Go language because it breaks backward compatibility.

Backward compatibility means that nodes running older versions can still handle blocks generated by nodes updated to newer versions, and the new rules do not violate old rules;

The main feature of the upgrade is to eliminate backward compatibility in the network by requiring nodes to be updated with the rest of the system. If not, these nodes will run on a separate blockchain.

Translators are common today, but they do almost one thing -- dealing with backward compatibility.

Users of MyEtherWallet and Electrum reported that they were facing phishing attacks.

Wallet, Coldlar, Electrum, Huobi.

In addition, small partners who have used Electrum wallets should be aware that with Thecret phrase generated by Electrum, we can recover bitcoin keys on any browser using the Bitcoin Wallet web tool. And Electrum is so secure that there is no evidence that the distributed attack prevention system designed by Dark Wallet will be due to Electrum.

Bitcoin Wallet Electrum confirms a phishing attack against its users, reminding them not to download Electrum Wallet software from any channel other than the official website. Earlier media reports said Electrum users had maliciously stolen millions of dollars worth of cryptocurrencies. Hackers create Electrum wallet software with malicious code, induce users to download, and trick users into providing login information such as passwords to commit theft.

For RHEL/CentOS systems, use YUM Command to install systat.

According to The Next Web, the attackers even implemented their own Electrum servers, which hosted the attacked Electrum.