W32/Netsky-P is a fake security pop-up. Its presence is a sign of a Trojan infection on the computer, and the aim of W32/Netsky-P is to scare the user into purchasing the phony anti-virus program - KvmSecure.
In most cases, Trojans enter the targeted computers via vulnerabilities in the system. The greatest part of vulnerabilities is due to not updated software. The newest version of each application is patched against a variety of security threats. Therefor, to stay away from Trojans and other malware pieces, one should keep their programs up-to-date by downloading the updates only from the genuine websites of the products. W32/Netsky-P's main task is to advertise the rogue, and its threat level is medium since it is not as dangerous as the application it promotes. Its capital trick is to display warnings like this one:
Spyware Threat. Your computer is infected with Spyware: Adware.Win32.Agent.rf, Packed.Win32.NSAnti.r, W32/Netsky-P. Remove All Spyware
If clicked on, however, the alert leads to the unauthorized download of KvmSecure. Like most other rogueware, KvmSecure is capable of calling forth a number of cons in order to victimize a computer and make its user pay for KvmSecure – full version. Some of the rogue's main deception-techniques are:
As you can judge by the description of the rogue, it should not be allowed to enter your machine. The removal process must start long before KvmSecure has managed to install itself on the computer, therefor once you spot the W32/Netsky-P pop-up, you should take measures for its eliminations so that it does not bring along the malicious program. The best way to get rid of the annoying warning is to run a full scan of your PC with a legitimate anti-virus software!