Auteur: Anatole Shaw

Categorieën: Internet, Security

Spam? Not Spam? Tracking a hijacked Spamhaus IP

21 maart 2013 -

Today we noticed we that a lot of our incoming email was being marked as spam. Since this included many messages that were clearly not spam, we decided to investigate more deeply. We found that a third party was subverting the Spamhaus service using a routing-based attack.   First clues: Spamhaus misbehaving? To filter out spam we use a combination of about 30 different rules. One of them is based on the Spamhaus advisory services, which are a family of… Lees meer