Google announced a major change to its Safe Browsing feature in Chrome today that will make the service work in real time by checking against a server-side list — all without sharing your browsing habits with Google.

Previously, Chrome downloaded a list of known sites that harbor malware, unwanted software and phishing scams once or twice per hour. Now, Chrome will move to a system that will send the URLs you are visiting to its servers and check against a rapidly updated list there. The advantage of this is that it doesn’t take up to an hour to get an updated list because, as Google notes, the average malicious site doesn’t exist for more than 10 minutes.