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What can a malicious PHP script do for You?
And just like many forms of executable malware that runs on Windows — the type I’m more familiar with — the most successful malicious PHP scripts permit their users (the criminals) to control and manipulate Web servers for their own benefit and, most commonly, profit.
What are the different types of PHP malware?
PHP Malware types. It’s a simple script that attempts to use any file copy command the server is capable of executing to retrieve payloads from remote servers, or, in worm-like behavior, move duplicates of a malicious script to multiple locations on the affected server.
What happens when a web server is infected with PHP?
When a Web server becomes “infected” with malicious PHP, it’s not the same as when a Trojan executes on a Windows desktop. The “infection process” involves little more than a criminal breaking and entering a Web server using stolen FTP credentials, dropping off the files in directories accessible from the outside world, and logging out.
Can a malicious PHP script redirect you to another page?
The most simplistic forms of malicious PHP scripts, shown above, simply redirect site visitors to a different page, but can do so dynamically. The code shown here was pushed to a Web server whose owner’s FTP credentials had been stolen.
How to prevent browser cache for PHP site?
Setting headers in PHP didn’t help me (perhaps because the headers would need to be set in the stylesheet file instead of the page linking to it?). I found the solution on this page: https://css-tricks.com/can-we-prevent-css-caching/ Append timestamp as the query part of the URI for the linked file.
Can a proxy server cache a web page?
Proxy servers that cache web pages, such as those common to ISPs, generally won’t read the HTML documents themselves. A web browser might know that it shouldn’t cache the page, but the proxy server between the browser and the web server probably doesn’t–it will continue to deliver the same out-of-date page to the client.