Online-petition site Change.org. No personal data was stolen , a spokesman said . The targeted petitions were in a featured section of the website . Joffe-Walt said the hacker exploited a `` minor vulnerability '' and made changes to text and photos on the petitions . The website says it has more than 35 million users .
Online-petition site Change.org. No personal data was stolen , a spokesman said . The targeted petitions were in a featured section of the website . The website says it has more than 35 million users .