Viewing profile — arkaine

Good luck with AWS/Azure IP addresses. Most cloud providers have their entire IP blocks of compute services (VM, etc.) blacklisted by the majority of DNSBL and antispam actors. If …

Mailinblack does this for more than ten years now, mostly in France. This technique is called a "challenge-response" filtering. It does work pretty well with other antispam techniq…

The "My address" autocompletion gave me that feeling too.

The Jaff waves and the massive amount of threats make it really hard to identify. Wannacrytor may not be found directly attached in the mail, only a downloader for it (like office …

Lack of arp/layer 2 isp, routing. There is also a mistake inside the DNS part. DNS queries are done from the client - and this is actually true for a majority of client/server requ…