在数字化时代，网络安全已经成为人们关注的焦点。SQL注入作为网络安全领域常见的攻击手段之一，近年来不断演变出新的招式，给网络安全防护带来了新的挑战。本文将揭秘SQL注入的新招式，并详细解析网络安全防护攻略。
一、SQL注入新招式解析
1. 基于时间延迟的SQL注入
基于时间延迟的SQL注入是一种利用数据库查询时间延迟进行攻击的技巧。攻击者通过在SQL语句中插入特殊字符，使数据库查询时间变长，从而获取敏感信息。例如，攻击者在SQL语句中插入以下内容：
”`sql SELECT * FROM users WHERE username = ‘admin’ AND (SELECT 1 FROM dual) UNION SELECT sleep(5), NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 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