The document discusses trust hacking and web risks in 2017. It found that every website calls on an average of 25 background sites for content. More than 32,000 sites relied on the vulnerable Microsoft IIS 7.5 software from 2009. The business and economy category had the most "known bad" sites and vulnerable sites, and suffered the most breaches over the last year compared to other categories. Categories of websites can change their reputations and phishing sites were found across different categories using legitimate hosting services.