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Indian hacker group claimed responsibility for January 7 cyber-attack as revenge for Pathankot assault
Hacker breaks into and defaces websites and subdomains belonging to Xuchang city.
Hackers cite vulnerabilities in server of PKNIC - that manages domains for Pakistan - as reason.
Hacker leaves message saying defacement was carried out in remembrance of July 13 Mumbai bombing victims.
Cyber wars and the battle to block porn.
The page receives about 50,000 hits daily and was also hacked about a week ago.
"Pakistan Cyber Army" defaces IndianDefence.com in ongoing cyber battle.
Pakistani hackers retaliated by taking down the Press Club of India website.
Black-hat activity in Pakistan has gained a sort of infamy due to cross-border activity in recent years.
The official site was defaced by an unknown hacker who left a message for the party.