Malware Analyst Kaspersky Lab Christian Funk warned, the user notebook must be on the alert when accessing Wi-Fi in the place of the public. Because, Funk stressed, internet access through the network of Wi-Fi very serious the attack took the form of the hijacking of the data. To trap casualties, the criminal generally makes the access point nirkabel (hotspot) free or copied the page login the providers of the service of Wi-Fi tepercaya. Further, the criminal was kept waiting for casualties to be provoked entered these dangerous networks.

"To carry out this attack, the perpetrators might not have technical knowledge the computation" of the "high-level." The perpetrators must only make the access point false in order to traps casualties. After casualties were trapped, then the perpetrators could tap the data that diketikkan casualties in pages web that was taken through Wi-Fi off, said Funk.

Funk explained, the main target this attack was to steal information of casualties's credit card when casualties carried out the online transaction used Wi-Fi. However, the criminal could also steal other information like akun the e-mail at the same time password him, as well as akun-akun that was used by casualties to access sites of the internet, for example sites jejaring social.

Funk warned, the theft of this data had the serious consequences. For example, if the criminal could steal information of casualties's credit card, then the criminal could make use of casualties's credit card to shop. The expenses bill then fell to casualties. In fact casualties had not carried out this expenses.

The other example, if the criminal could steal akun and password from casualties's e-mail, then the criminal could make use of casualties's e-mail to spread spam (the e-mail was not wanted). Crimes could be then carried out if the criminal could steal akun other, like akun the site jejaring social.

Funk stressed, the method was most effective to prevent the hijacking of the data through the network of Wi-Fi being to use VPN (Virtual Private Network). With VPN, the data from notebook the user was sent to server went through a tunnel virtual, likewise was the reverse. Alhasil, this data could not be tapped. However like that, Funk acknowledged, VPN technology too complicated for most users notebook.

"Enkripsi the data traffic nirkabel too complicated for the user." At the moment then did not yet have the VPN solution that was plug-and-play (could be used without necessary setting), stated Funk.

Without VPN, the user Wi-Fi preferably should not carry out the financial transaction or accessed the internet banking. Also, the user must very hard-working in place of password from akun-akun that was had. If must carry out the internet transaction banking in a mobile manner, Funk suggested, the user notebook better use the network of the internet 3G.

The "internet 3G became alternative interesting from Wi-Fi because of the data traffic 3G more was difficult to be hijacked." Also, the network of the internet 3G had the scope was wider than Wi-Fi. The speed of the internet 3G also more than enough for most aims of the moving computation, explained Funk.