Well, as usual the only thing you can say is that it is not usual.

Interestingly, a strong drop in the number of spam emails sent from botnets on IoT devices, compromised routers, etc.

In general, it reflects a growing trend for spammers to move to alternative methods.

This week, in a continuation from last week, we see an increase of the use of new favourite TLD's, .rest,.bar,.surf etc

204.13.154.22                    45   mail.aayiseeu.rest
   204.13.154.31                  1   mail.credidcore.rest
   204.13.154.32                 72   mail.bazzer.rest
   204.13.154.33                  2   mail.portfolio.rest
   204.13.154.89                 32   mail.shanky.rest

Of course, they are setting shop up at historically 'lenient' hosting providers, such as MultaCom, QuadraNet, HostSailor as well as smaller fairly new IP Network assignments

#5.44.46.86          (RN)          1   mail.legndketofl.rest
#   5.44.46.136      (RN)          1   mail.frihartrail.bar
#   5.44.46.173      (RN)          1   mail.mygolfng.rest
#   5.44.46.174      (RN)          1   mail.chiocrof.rest
#   5.44.46.192      (RN)          1   MAIL.fungunator.rest
#   5.44.46.195      (RN,RS)       1   mail.homlght.surf
#   5.44.46.222      (RN)          1   mail.lumaslim.rest

#95.141.27.130  x1      mail.usacademy.rest
#95.141.27.137  x11     mail.carparfor.surf
#95.141.27.170  x3      mail.ontacpen.rest
#95.141.27.186  x5      mail.tacglas.surf
#95.141.27.188  x1      mail.splashwnes.bar
#95.141.27.217  x3      mail.lifelinesc.rest
#95.141.27.227  x9      mail.gsblood.surf
#95.141.27.236  x21     mail.homeofcc.rest

Hetzner continues to have large scale abuse, albeit pretty easy to identify.. 78.47.232.45 1 static.45.232.47.78.clients.your-server.de 88.99.82.60 1 static.60.82.99.88.clients.your-server.de 88.99.82.85 1 static.85.82.99.88.clients.your-server.de
88.99.83.8                        1 static.8.83.99.88.clients.your-server.de
88.99.83.56 1 static.56.83.99.88.clients.your-server.de 88.99.83.150 1 static.150.83.99.88.clients.your-server.de 88.99.83.193 1 static.193.83.99.88.clients.your-server.de 88.99.83.247 1 static.247.83.99.88.clients.your-server.de 88.198.156.190 1 static.88-198-156-190.clients.your-server.de 95.217.4.34 2 static.34.4.217.95.clients.your-server.de 95.217.5.255 1 static.255.5.217.95.clients.your-server.de 95.217.12.181 1 static.181.12.217.95.clients.your-server.de 95.217.12.182 1 static.182.12.217.95.clients.your-server.de 78.46.230.2 1 static.2.230.46.78.clients.your-server.de 78.47.92.0 1 static.0.92.47.78.clients.your-server.de 78.47.95.209 1 static.209.95.47.78.clients.your-server.de 78.47.98.115 1 static.115.98.47.78.clients.your-server.de 78.47.98.116 1 static.116.98.47.78.clients.your-server.de 78.47.98.119 1 static.119.98.47.78.clients.your-server.de 78.47.153.148 1 static.148.153.47.78.clients.your-server.de

But Amazon spam sources are currently by far the largest reported, and while it might be easy to say that's because they are so big, when it gets to be such a large percentage of what we track worldwide, it is concerning, and of course as previously mentioned hackers have publicly stated that they 'are moving to the cloud'.

Also noticing a larger than normal percentage of malware style (fake invoice attachments) from gmx.com lately, almost looks like they reduced some of their outbound filtering, given the obvious nature of those.

On the whole, spam to the 'quarantines' has seen an increase over the last couple of weeks, as spammers move from botnets of compromised devices, to botnets of compromised email accounts.

Email Compromise attacks are definitely on the rise. And a surprising large part of that is from the big three cloud providers, Amazon, Azure, and GoogleCloud.

And SendGrid shared bulk email platform is REALLY seeing an uptick in malware being sent from their infrastructure.

And yeah, catfishing is still a thing, the small twitter sized 'I am lonely and looking for a good man'. Usual sources, yahoo and gmail addresses, they keep coming up with new templates.

And of course, as always gmail 'SEO' and 'outsourcing' and 'Do you have time for a meeting this Tuesday' spam is still problematic.

That's about it for this weeks summary from our spam auditing teams reports, have a safe and happy Super Bowl weekend everyone!

        -- Michael --

Remember, POP/IMAP/SMTP AUTH without SSL is BAD, just stop allowing it.
And look at transparent two factor authentication methods like CLIENTID


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