Security and Privacy Security and Privacyīlocks third-party tracking cookies by default In this review, we’ll compare the Opera browser with our Firefox browser in terms of security and privacy, utility, and portability to help you choose which browser might be the best fit for you. While Opera has not reached the same level of user adoption as Firefox or Google Chrome, it’s maintained a relatively stable and loyal base over a sustained period of time. The Firefox Browser and Opera are two of the earliest browsers on the scene still releasing frequent updates.
