Teach you how to use PHP and Vue.js to develop best practices for defending against malicious advertising attacks

Teach you how to use PHP and Vue.js to develop best practices for defending against malvertising attacks

If you own a website, whether it is a personal blog or a business platform, malvertising attacks may be harmful to your website Security is a threat. To protect users and websites, we need to take some protective measures against malvertising attacks. This article will introduce how to use PHP and Vue.js to develop best practices for defending against malvertising attacks.

1. Server-side defense

1. Filtering input data

Malicious advertising attacks often exploit vulnerabilities in input pages to attack websites by injecting malicious code. We can use PHP's filter function to filter input data. Here is an example:

<?php
$input = $_POST['input'];
$filteredInput = filter_var($input, FILTER_SANITIZE_STRING);
// 使用过滤后的输入数据进行后续处理
?>

By using the filter_var() function, we can perform HTML entity encoding on the input data and convert special characters into entities to prevent the injection of malicious code.

2. Validate user input

In addition to filtering input data, user input should also be validated. For the ad upload feature, we can verify the type and size of the uploaded file. Here is an example:

<?php
if ($_FILES['file']['error'] == UPLOAD_ERR_OK) {
    $allowedTypes = array('jpg', 'png', 'gif');
    $maxSize = 1024 * 1024 * 2; // 2MB

    $fileInfo = finfo_open(FILEINFO_MIME_TYPE);
    $fileType = finfo_file($fileInfo, $_FILES['file']['tmp_name']);
    $fileSize = $_FILES['file']['size'];

    if (in_array(strtolower(pathinfo($_FILES['file']['name'], PATHINFO_EXTENSION)), $allowedTypes) && $fileSize <= $maxSize) {
        // 处理上传文件
    } else {
        // 文件类型或大小不符合要求，进行错误处理
    }
}
?>

Before uploading a file, we must first verify whether the file type and size meet the requirements. This prevents malicious files from being uploaded and improves the security of the website.

2. Client-side defense

1. Use security options of Vue.js

Vue.js provides some security options that can help us prevent malicious Advertising attack. For example, the v-html directive is used to insert HTML code into a template. However, when using this directive, make sure that the inserted HTML code is authentic.

<template>
  <div v-html="trustedHtml"></div>
</template>

<script>
export default {
  data() {
    return {
      trustedHtml: '<p>Hello World!</p>'
    }
  }
}
</script>

In the above example, we set the value of the trustedHtml attribute to '<p>Hello World!</p>', which is A trustworthy HTML code. If you need to insert user-entered HTML code, it should be filtered and validated before insertion to prevent the injection of malicious code.

2. Prevent XSS attacks

XSS (cross-site scripting attack) is a common malvertising attack method. In order to prevent XSS attacks, we can use Vue.js's interpolation expression {{}} to display user input and encode the input data into HTML entities.

<template>
  <div>
    <p>{{ trustedText }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      userText: '<script>alert("XSS Attack!")</script>',
    }
  },
  computed: {
    trustedText() {
      const elem = document.createElement('div');
      elem.textContent = this.userText;
      return elem.innerHTML;
    }
  }
}
</script>

In the above example, we set the value of the userText attribute to '<script>alert("XSS Attack!")</script>', and then perform HTML entity encoding on the input data through the computed attribute trustedText. This prevents XSS attacks.

Conclusion

Malicious advertising attacks are an important issue for website security. We need to take some protective measures to protect the security of the website and users. This article introduces best practices for developing defenses against malvertising attacks using PHP and Vue.js, including server-side and client-side defenses. I hope this helps you and allows you to better protect your website security.

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