微软为间谍部门推出AI聊天模型
微软发布了一款专为美国情报机构打造的GPT-4 AI模型，这款AI在不连接互联网的情况下运行，可以帮助间谍机构安全分析机密信息，并实现类似ChatGPT的对话功能。
这款与互联网隔离的AI系统经过18个月的开发，目前已经提供给大约1万名情报人员测试使用。虽然它可以回答问题，但也会产生一些不准确的信息，误导使用者。
Ars Technica
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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.
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