law and crime popup balloon
Starting three days ago or so, every time I log onto my MacBook Air, a popup balloon appears in the upper right corner of the screen. Its title is Law & Crime. I try clicking on it and nothing. In the App Store it is available to download but I haven't downloaded anything onto my Mac from the App Store. I don't know where it came from but I would like to get rid of it. It apparently came as perhaps an attachment/Malware from something else. I have a MacBook Air 2020, running macOS Big Sur 11.2.3. Any ideas?