3. Be careful with public Wifi networks

If you are in a habit of using free public Wifi, you should be careful with this. Black hackers can intrude to these networks and steal your sensitive or private information like bank accounts or your social network accounts. If you need to do banking or shopping by smartphone, you ought not to do these transactions while you use public Wifi. Do it at home! And after your transactions are completed, just log out of those sites.

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