Junk Emails suddenly appearing in inbox

As of yesterday junk emails have suddenly started appearing in my inbox despite the filter set to exclusive. Having looked at the emails they all claim to have been sent on behalf of someone else and all state they are in my contact list. Having checked my contact list thoroughly, my safe senders list, safe mailing list etc. none of them are on that list. Given that my inbox emails appear on my phone this is exceptionally annoying. Given that I currently have a live subscription to what was Hotmail plus I am rather annoyed that this has suddenly started happening. Going by other posts people have made this is something that has recently started happening to other people as well, most of them yesterday indicating that something is wrong your end. Please get this sorted and do not advise, as you have others, to create rules or block phrases as they are all random junk.