Related Posts

GFI/SORBS – a DDoS Intermezzo

Act 1Act 2IntermezzoAct 3Act 4Act 5
Management Summary, Redistributable Documents and Links
I’ve been stage-managing for a production of The Nutcracker this week, so musical terminology is on my mind. In opera, the intermezzo is a comedic interlude between acts of an opera series.
This comedic interlude is about the “DDoS” – a distributed denial of service attack. What is a denial of service attack?

Read More

GFI/SORBS considered harmful, part 2

Act 1Act 2IntermezzoAct 3Act 4Act 5
Management Summary, Redistributable Documents and Links
Yesterday I talked about GFI responsiveness to queries and delisting requests about SORBS listings. Today I’m going to look at data accuracy.
The two issues are tightly intertwined – a blacklist that isn’t responsive to reports of false positive listings will end up with a lot of stale or inaccurate data, and a blacklist that has many false positives will likely be overwhelmed with complaints and delisting requests, and won’t be able to respond to them – leading to a spiral of dissatisfaction and inaccurate data feeding off each other.

Read More

ESPs being targeted

There has been an ongoing, concerted attack against ESPs recently. Today ReturnPath published some of what is known about the attack.

Read More