玩工程机，尤其是那些没有正式发布的工程机的时候，完整系统备份非常有必要。
因为你永远也不知道你有什么奇怪的想法会把系统玩崩，如果没做备份就永远恢复不回去了。
我这边不论是 Windows Phone 还是 Android 系统的工程机，全部会做好妥当的备份归档，即便手机不在我手上或是被出售了，它们也不会被删除。
说不定，你的工程机备份会成为解决世界级难题的钥匙。
BY 光卡的网络斗士培训班
Most people buy Bitcoin via exchanges, such as Coinbase. Exchanges allow you to buy, sell and hold cryptocurrency, and setting up an account is similar to opening a brokerage account—you’ll need to verify your identity and provide some kind of funding source, such as a bank account or debit card. Major exchanges include Coinbase, Kraken, and Gemini. You can also buy Bitcoin at a broker like Robinhood. Regardless of where you buy your Bitcoin, you’ll need a digital wallet in which to store it. This might be what’s called a hot wallet or a cold wallet. A hot wallet (also called an online wallet) is stored by an exchange or a provider in the cloud. Providers of online wallets include Exodus, Electrum and Mycelium. A cold wallet (or mobile wallet) is an offline device used to store Bitcoin and is not connected to the Internet. Some mobile wallet options include Trezor and Ledger.
Telegram is a cloud-based instant messaging service that has been making rounds as a popular option for those who wish to keep their messages secure. Telegram boasts a collection of different features, but it’s best known for its ability to secure messages and media by encrypting them during transit; this prevents third-parties from snooping on messages easily. Let’s take a look at what Telegram can do and why you might want to use it.
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