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网站安全防护指南：防DDoS、防CC、防SQL注入_我的网站

一 |     The United Auto Workers union has once again escalated its strikes against big Detroit automakers, this time adding a factory that makes Ram pickup trucks for Stellantis.The union says that 6,800 members walked out Monday morning and shut down the Sterling Heights, Michigan, Assembly Plant, a huge profit center for the company.The newest strike action comes just three days after union President Shawn Fain reported progress in talks with General Motors and Stellantis but said the companies will have to make better offers. No progress was reported with Ford, which last week said it had the best offer of the three.The union went on strike Sept. 15 at one assembly plant from each company. About 40,800 workers are now on strike against all three automakers. The strikes, now in their sixth week, cover seven assembly plants and 38 parts warehouses. About 28% of the union's work force at the three company's are now on strike.General Motors, which increased its offer last week, and Ford were spared in the latest escalation. At first the union avoided striking at pickup and large SUV plants, which at all three produce vehicles that make the most money for the companies. But that changed two weeks ago when the UAW took out a giant Ford heavy-duty pickup and SUV plant in Louisville, Kentucky. In its statement, the union said that offers from Stellantis, formed in the 2021 merger of Fiat Chrysler and France's PSA Groupe, lag Ford and GM despite the automaker having the most revenue and highest profits of the three.Stellantis has the worst offer on cost of living raises, how fast workers move to the top of the pay scale, temporary worker pay, converting temps to full time, and other issues, the union said.By taking down the Stellantis factory, the union is signaling Ford and GM to improve their offers, Wedbush analyst Dan Ives said. Last week it appeared a deal might be in the works, but Fain said Friday that the companies will need to pay more.“It takes a potential deal that appeared on the table -- at least for now -- off of it,” Ives said, predicting the the union will announce new strike locations later this week. "There could be some tough talks ahead,” Ives said.On Friday, Fain said Stellantis and GM have made wage offers that matched Ford’s 23% over the life of a four year contract. But, speaking in his characteristic sharp tones, the union president insisted that the companies can go further.“We’ve got cards left to play, and they’ve got money left to spend,” Fain said.While Fain said the companies keep touting that they’ve made record offers to the UAW, he said they’re insufficient to make up for how much ground workers have lost during the past two decades. Each time the automakers make an offer, Fain said, they insist it’s the best they can do, only to return days later with a better offer.“What that should tell you,” Fain said, is that “there’s room to move.”。    

　    一键部署OpenClaw        网站上线后就会被扫描，被扫到漏洞就被打。安全防护不是一次性工作，而是持续的基本功。    先说SQL注入。

二 | 最常见的攻击方式，黑客通过表单输入拼接SQL语句。防护方法很简单：用参数化查询，干掉字符串拼接。    # PHP防SQL注入写法（PDO参数化查询）    // 错误写法：直接拼接字符串    $sql = "SELECT * FROM users WHERE name='" . $_POST['name'] . "'";    // 正确写法：使用PDO预处理    $stmt = $pdo->prepare("SELECT * FROM users WHERE name = :name");    $stmt->execute([':name' => $_POST['name']]);    $result = $stmt->fetchAll();    再说CC攻击。某个IP频繁请求你的页面，把服务器资源耗尽。Nginx可以限制单IP请求频率。    # Nginx限制单IP请求频率（nginx.conf）    http {    limit_req_zone $binary_remote_addr zone=one:10m rate=10r/s;    server {    location / {    limit_req zone=one burst=20 nodelay;    # 每秒最多10个请求，突发允许20个    }    }    }    # 封禁恶意User-Agent    if ($http_user_agent ~* "bot|spider|crawler") {    return 403;    }    DDoS防护个人站长很难自己搞，最好的办法是接CDN。Cloudflare免费版就能挡住大部分小规模DDoS。如果被打得很狠，就开CDN的“我被攻击了”模式，所有流量走CDN审查。    另外几个基本操作：后台目录加密码保护、数据库定期备份、程序及时更新打补丁。这些眠得快，别等被打了才想起来。

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Published on:06:13:25