The Firefox update I was prompted to initiate on May 12 resulted in a compatibility issue message. Following Firebox Help recommendations, I re-installed my Firefox. Now I see that my downloads folder has a long string of unfamiliar files, and I need assurance that these are not remnants of malicious activity. All files have names like i-33639-002-XX.jpg and are dated the same time (5/12/2026, 4:07 PM). Each file shows as “0 KB” in size. All are listed as “JPG File”. Has this happened to other Firefox users?