Kickstarter , a popular crowd-funding site , urged users to change their passwords Saturday after announcing that it had been hacked . Kickstarter CEO Yancey Strickler said in a blog post that usernames , passwords , mailing addresses , e-mail addresses and phone numbers had been compromised by hackers , but no credit card information had been stolen . `` ( W ) e strongly recommend that you create a new password for your Kickstarter account , and other accounts where you use this password , '' Strickler said in the blog post . `` We 're incredibly sorry that this happened . We set a very high bar for how we serve our community , and this incident is frustrating and upsetting . '' Hackers `` gained unauthorized access to some of our customers ' data , '' but `` there is no evidence of unauthorized activity of any kind on all but two Kickstarter user accounts , '' a news release said . Kickstarter did not say how many accounts were compromised . Law enforcement alerted Kickstarter to the hack Wednesday , according to the release . The site then `` immediately closed the security breach , '' it said . According to the website -- which allows people with products , projects and inventions to post their ideas and raise money for them by garnering donations from users -- 5.6 million people have pledged funding to 56,000 projects since its launch in 2009 .
Usernames and other information was compromised on Kickstarter , the site said . The company has since taken down all of its campaign pages from Kickstarter, but it is still offering a reward for anyone who can provide proof that their account info was compromised. Law enforcement notified Kickstarter of the breach Wednesday , a news release said .