Are you receiving Empty or "Hi" emails?
I wanted to perform a little unscientific information gathering, I'm working with a small group who think they're being specifically targeted by these, while I think it's more widespread and opportunitistic. If you've recently received these no content probe emails, or a simple "Hi" message, please send a simple comment below in this format:
- Industry
- Order of magnitued in size (e.g. <10, <100, <1000)
- Sending domain
Feel free to use our comment page to add extra analysis comments here: https://isc.sans.edu/contact.html
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15 comment(s)
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I have not seen any of these empty emails, but do use very aggressive filtering. If you can post some of the source IP addresses or mail headers it might be helpful. I could then check to see if any of the IP addresses have matches. I presume some others may be able to do the same.
Anonymous
Oct 24th 2014
9 years ago
Anonymous
Oct 24th 2014
9 years ago
Anonymous
Oct 24th 2014
9 years ago
Anonymous
Oct 24th 2014
9 years ago
industry: Consulting (even once on my personal GMAIL)
Magnitude: <10
Sending domain: GMAIL
The senders are potentially sending emails from India and the US from what i recall in the email headers.
Anonymous
Oct 24th 2014
9 years ago
industry: Financial
Size: < 100,000
industry: financial
size: <1000
multiple domains
Industry: healthcare
Industry: healthcare
sending domain: AOL
included link
Anonymous
Oct 24th 2014
9 years ago
Size: <50000
Anonymous
Oct 24th 2014
9 years ago
Anonymous
Oct 24th 2014
9 years ago
<10
From gmail.com
Anonymous
Oct 24th 2014
9 years ago
Size > 1000
Domains - gmail, others
Anonymous
Oct 24th 2014
9 years ago