Trevor HewsonA weird icon has appeared in the iMac's menu bar. It looks like two chain links, filled in black. Against my better judgement, having found no Google enlightenment, I finally plucked up courage to click on it and was presented with a sign in page for Adobe Creative Cloud. I've no idea where this came from and, apart from elderly copies of Photoshop Elements and no doubt an Acrobat Reader buried somewhere, we don't knowingly use any Adobe software.
The icon has only recently appeared and is present regardless of which of us logs in. Any ideas on why it might have appeared and how to evict it and any related Adobe stowaways would be appreciated.