Data Leak Defender от Protectyourdata

Data Leak Defender instantly detects and blocks leaks of sensitive info like ssn, email, credit cards, and more. Unlike others, it works across major browsers, gives real-time alerts, and lets you choose exactly what to monitor—privacy control has never been this easy. One of the best features of our extension is that on top of every type of personal info we have to offer, you have the option to detect any type of data that you want by typing it in on the customization tab