How to identify and prevent browser-type targeted attacks when PHP code is hung up?

Parse a PHP code snippet that is hung up

This code does not directly display the PHP code, but shows a picture, which implies the existence of a malicious code. Let’s analyze the meaning of this. The image is likely to represent a piece of PHP code, which is used to jump or load different content based on the user's browser type.

Based on the answer provided, we can infer the functionality of this hidden PHP code: it detects the user's browser type. If the user's browser is any of Baidu browser, Sogou browser or 360 browser, this code will redirect the user to the URL http://3n9.xyz/u/.

This is a common method of hanging horses. The attacker uses this code to accurately poison according to the browser type, and maliciously attack or spread viruses against specific browser users. The harm of this code is that it directs the user to a website that may contain malware or harmful content without the user's knowledge. Therefore, when encountering similar situations, you should be vigilant and avoid visiting suspicious websites. This also reminds us to always pay attention to network security, install reliable antivirus software, and regularly update the system and browser to reduce the risk of being attacked.

The above is the detailed content of How to identify and prevent browser-type targeted attacks when PHP code is hung up?. For more information, please follow other related articles on the PHP Chinese website!