Most likely the phisher had a Hotmail-specific method to hit inbox, so their spam was more effective on Hotmail than other providers. The other possibility is t

Most likely the phisher had a Hotmail-specific method to hit inbox, so their spam was more effective on Hotmail than other providers. The other possibility is that the phishing page emulated a Hotmail login, so only those with Hotmail accounts would believe it enough to enter their info.