There are some steps that users can take to protect themselves from this attack: - Try to resize the window. If you are unable to, it is likely a fake browser window. - Fake BiTB browser windows might not behave as expected if you close/minimize/maximize them. - The look-and-feel of fake browser windows might not match your operating system, browser theme, etc. - Pay attention to the details of the pop-up window, such as the size, position, appearance and behavior of the elements. If something looks off or unusual, you should close the window and report it. - In general, be careful when clicking on links or opening documents from unknown or suspicious sources.  - Use a security-focused browser extension that can detect and block such phishing attempts automatically. - Keep your browser up to date with the latest security patches and update whenever prompted by your browser.  - Make sure you have 2FA enabled for all of your critical services.