Caller: Palo Alto

Called me twice on my pers mobile during work hours which I rejected because I didn't recognise the number. He then called me on on work line and when asked if he'd just called my pers mobile he denied it. I asked how he got my work number and he said he spoke to my colleague (name I did not recognise) who advised my number was listed online. It is not. Anyway, he was spouting some Palo Alto talk which I looked up, seems legit but his approach was downright dodgy so totally ignoring it.