How can I prevent popup ads when I visit websites?

Episode 1564 (1:22:19)

John from Los Angeles, CA

John is finding that when he goes to a website, he gets an additional window open with an advertisement. Leo says that's called a browser hijack and it's usually caused by an extension he doesn't recognize. John should look in his browser settings and extensions, and then see if there's anything in there he doesn't recognize. Chances are, there is.

How about password managers? Which is good and secure? Leo says LastPass is his favorite, but there's also 1Password and Dashlane. But if he's an Apple user, then Apple's Keychain security is really good and it comes with the OS.

(Disclaimer: LastPass is a sponsor)