Please whenever or wherever you receive a job alert from whatsoever company (known & unknown), do yourself a little favor by typing the name, address or email of such company on google search & you would have a good idea about what you need to know. Either its Fake or Real.
Some are just stewpid seminars or conferences bringing graduates together to dupe them of their time & money.
I post this just to save you time, money & energy cos I was a victim of so many cases, thanks to google.