With Avast Premier, when a phishing site is detected the suite throws up a medium-sized alert window in the center of the screen. Typically, security suites install a browser extension in your default browser and flag suspicious sites that way. But for 2019, Avast Premier can flag phishing sites without a browser extension. Avast Premier 2019’s anti-phishing alert window.Īnti-phishing technology is a mainstay in Avast’s security suites, as it is in most security suites these days.