TCS Hack

So today India's biggest IT company TCS (Tata Consultancy Services) was "hacked".The idiots on internet wasted no time in calling out - it is India's biggest IT company and they got hacked and they are so pathetic and blah blah blah.

It was apparently a DNS hijack which basically means that the TCS servers themselves weren't compromised but the DNS server cache was somehow compromised to point it to the attackers ip.I don't know enough about it to understand if TCS could have taken any sort of preventive action on such attacks are not.

But here is a very nice article  that explains DNS spoofing , talks about a couple of techniques of doing it and  even gives step by step instructions for doing it  in one way.