c99 shell

The c99 shell is a somewhat infamous piece of PHP malware. C99 shell is commonly uploaded to a compromised internet application to supply an interface to an aggressor. The c99 covering permits an opponent to pirate the web server procedure, permitting the enemy to issue commands on the web server as the account under which PHP is running. The c99 covering allows an assailant to surf the filesystem, upload, sight, and edit documents in addition to action files, delete documents, and also change approvals, all as the internet server. Locating the c99 covering on your system is rather solid proof of a compromise.