We partner with third party service providers, including social networks, to provide targeted advertising services that are customised based on your online activities over time and across unaffiliated websites (Interest-Based Advertising) and to help us measure brand awareness and the effectiveness of our online advertising. These third parties use cookies, web beacons, and other similar technologies to collect information about your activity on our Sites, and they may combine it with information about your activity on other, unaffiliated websites. We and our service providers may use data collected on our Sites or when you open emails from Vanguard, together with other information we have about you and your Vanguard relationships, to serve Vanguard ads to you on other sites as you browse the web.