Apparently, for the last several days, sync-eu.exe.bid intrudes in several of the different  browsers - Chrome, Firefox, even Brave, and presumably others. Malwarebytes blocks an outgoing message from it rather frequently when a browser is opened on my Windows 10 laptop. Since Malwarebytes is blocking it, it doesn't seem to present an actual hindrance, but certainly nobody would want it latent on their computer. Is it a cookie? What is the nature of it, or have you established that yet?  I still