WASHINGTON (3/15/10)--Credit unions and nonprofit organizations using the .org Web domain will see beefed up security on the domain beginning in June. The Public Interest Registry will add a layer of security known as DNS Security Extensions (DNSSEC) to the domain to protect millions of non-profit organizations and their donors from hacking attacks known as cache poisoning. (Networkworld.com March 11). Cache poisoning refers to the practice of hackers redirecting visitors from a legitimate website to a bogus one without the website operator or end user knowing about the switch. The practice stems from a flaw in the Domain Name System (DNS) disclosed in 2008 by a security researcher. The registry will support DNSSEC for first and second-level .org domain names. "There are credit unions that use .org ... and there are non-profit organizations that are in fundraising and have been targets for attacks, some of them quiet public," said Alexa Raad, CEO of The Public Interest Registry. DNSSEC will allow customers who require security to have it, she told Networkworld.com. DNSSEC is an emerging standard that allows websites to verify their domain names and corresponding internet provider addresses using digital signatures and public-key encryption. Other domains deploying DNSSEC include .gov and country code top-level domains operated by Brazil, Bulgaria, Puerto Rico and Sweden. VeriSign will deploy DNSSEC in the .edu domain by second quarter of this year. The .net domain will deploy it in fourth quarter and the .com domain during first quarter 2011.