Whois queries are used to determine the IP address ranges associated with clients. A whois query can be run on most UNIX environments. In a Windows environment, the tools such as WsPingPro and Sam Spade can be used to perform whois queries. Whois queries can also be executed over the Web from www.arin.net and www.networksolutions.com.

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Yahoo Hack Leaks 453,000 Voice Passwords

Yahoo Voices users: Change your Yahoo password immediately. A hacker or hacking group that bills itself as “DD3Ds Company” Thursday leaked what it said were plaintext passwords for 453,492 Yahoo

Subnetting an IP address

IP subnetting is a fundamental subject that’s critical for any IP network engineer to understand, yet students have traditionally had a difficult time grasping it. Over the years, I’ve watched

Clickjacking technique called “content extraction”

Cookiejacking is a UI redressing attack that allows an attacker to hijack his victim’s cookies without any XSS. Clickjacking attacks have been widely adopted by attackers worldwide on popular websites