US social media group Facebook seems ready to publish categories of data it collects from users, an Austrian student group lobbying for stricter privacy rules said on Tuesday. Facebook had agreed in December to overhaul privacy protection for more than half a billion users outside North America after a three-month investigation found that its privacy policies were overly complex and lacked transparency. “This (data) access issue as well as having disclosed all the data categories they are holding about users is something where we found some progress,” Max Schrems, spokesman for the europe-v-facebook.org group, told reporters after meeting Facebook representatives in Vienna on Tuesday.