Public Key Infrastructure (PKI) enables the secure and private exchange of data using an unsecure public network, such as the Internet. The use of paired private and public keys, issued by a trusted third-party authority, enables documents to be transferred securely and for the sender to be...

Hackers account for enormous costs associated with computer intrusion in a world increasingly reliant on computer and Internet-based technologies. Within the hacker community, there are “good” hackers called white hat hackers and “bad” hackers called black hat hackers. Essentially, one...

Nowadays a big and increasing proportion of world's population uses Internet in their day life and web connection via mobile is having a growing importance. Day by day there is more information about the risks and dangers of a misuse of Internet and mobile phones, which may involve all sorts of...