Transferring the activities to electronic space, each Internet user could be involved in a risk that the information accessed and transmitted by network might be read, retrieved and, supposedly, trespassed. Therefore, the preventive protection of personal computer and computer system security is relevant in order security gaps in a computer system would appear as less as possible. Subject of the Work: “PC Security” Internet service website designated to check-out personal computer system security by users on their own. Goal of the Work: computer security measures analysis and computer security control system development. The current study contain the analysis of measures that support system to be more attack-resistant: rules necessary for network security resistance; information coding measures; actions disturbing normal system operation; actions to be undertaken in case of successful intruder attack. Requirements for the models of Internet server security and testing system were set therein. Observing the aforementioned requirements computer system security testing system was designed and implemented, system testing carried out, and system user specifications described. For flexibility purposes two check-out options were involved in the testing system: system user performs the computer IP testing himself/herself or testing is performed by a system operator with report sending. This particular testing system should be very useful for the users because the latter would be... [to full text]