Earlier quoted context omitted.
Password protection may have been used to bypass antivirus and other filters. While you should treat dumps like this with a lot of suspicion, treat password protected zips with a heaping dose of care as they may have been used to evade automated defenses.
Yes - but not for hostile purposes, but because your own company's antivirus won't let you mail an executable to a colleague.
Two days ago, I needed the script again but couldn't find it. Went to our e-mail thread and it said "the following potentially malicious attachments were blocked", showing mine, but... even from my outgoing mailbox? That seems ridiculous and problematic, considering that it sent fine at the time.
I know that e-mail shouldn't be used as a replacement for Sharepoint or Dropbox or whatever, and I should have a local copy of what I need, but it just seems annoying and arbitrary.
Anyway, I just logged into Outlook Web and downloaded it from the message there. Problem solved.