42 ON-LINE COMPUTER SERVICES BY USING NETWORK AND INTERNET COMPUTER SERVICES, NAMELY PROVIDING COMPUTER DATA RECOVERY, COMPUTER DATA DELETION, COMPUTER DATA MAINTENANCE, COMPUTER DECODING; ON-LINE COMPUTER SERVICES FOR FINDING LOST AND DAMAGED COMPUTER EVIDENCE, PREVENTING AND CHECKING HACKING, PREVENTING AND RECOVERING VIRUSES, DETECTING, COLLECTING AND RECOVERING COMPUTER DATA; ON-LINE COMPUTER SERVICES, NAMELY, PROVIDING COMPUTER FIRE WALLS FOR OTHERS