I got a fairly obvious phishing email this morning on the first of those accounts. I'd like to think that MIT alumni are bright enough not to respond to emails that say, "reply to this with your username and password or we will delete your account from our database." Also, I don't think there actually a webmail.mit.edu site, which is what it was claiming it would delete one from. Unfortunately, the web-based service doesn't have an option for full headers so I couldn't look at where it was really directing people.
The email didn't show up at the ISP account, making this more obviously a phishing scam. (That account doesn't get nearly the same volume of spam. Unfortunately, it also has a spam detector that appears to be untrainable. That is, I tell it something is spam, but it lets through the next umpty-ump messages from the sender with the same title.)
I thought it was still expedient to change my alum.mit.edu password, but when I tried to log in to the Infinite Connection, I got a "too many redirects" error message.
I know a few people on my friends list are also MIT alums, so wondered if anybody knew what the story was.