How to prevent pharming

摘要

You're familiar with the dangers of phishing, but what about pharming threats? Pharming misdirects Web users of trusted brands to phony storefronts set up to harvest IDs. The crime is typically accomplished through cache poisoning of DNS servers or domain hijacking, in which registrars are tricked into moving domains. In recent months, hackers have proven there's reason for concern about both types of attacks. In March, SANS Institute uncovered a single cache-poisoning attack that redirected 1,300 brands, including ABC, American Express, Citi and Verizon Wireless. In January Panix had its domain hijacked by an Australian hacker; and in April, Hushmail's main name server's IP address was changed to that of a hacker graffiti site.