Showed up invalid number. Guy called trying to say i had an issue with my Windows, probably trying to access my personal info through my computer if i had fallen for his scam. Any time your caller id shows invalid number or doesn't identify to caller do not ever give personal information. I never answer "yes" and i always whait for them to identify themselves or ask who they are. If they ask for you or anyone in your household dont respond with "yes". Always ask who they are and if they refuse to identify themselves then hang up. If they do identify themselves and your caller id doesn't match up with it then once again do not fall for it. Never give personal info to anyone you did not expect to call you. If they are legitimate then they will give you their name, contact info and company info. Then check them out before giving any info to them. This guy became vulgar when i called him out on his scam.