Facebook hellocdn.html?v=1 browser popup. Not a virus.
tl;dr Not a virus. Its popup from Facebook Messenger application to ping the CDN. ----- I noticed that from time to time, especially when my left comp is idle overnight, I'll have these blank pages opened in my browser window the next day. https://fbcdn-creative-a.akamaihd.net/hads-ak-prn1/hellocdn.html?v=1 My first thought was like... gosh, is there's malware on my comp? Then I started to inspect my comp. First Question. Is the CDN address valid? Did a search on the list of CDN addresses and found this stackoverflow page . Seems like its "fbcdn-creative-a.akamaihd.net" is one of the Facebook CDN. Furthermore, akamaihd.net is a reliable CDN provider. Next Question. If the CDN address is valid, could it be that Facebook CDN got compromised? So I inspect the page elements, and resources (js files). Seems like pretty OK, the URL that the script call is actually defined in the "result_endpoint " variable. // hardcode the return url var...