Thoughts, tips and tricks

June 28, 2023

Another Open Relay Scan

In May this year, the number of SIP scanning started increasing again. Such an increase in scanning can be easily noticed when looking at the free, publicly available honeypot data that I provide. For example, data like the one in the picture below where you see IP addresses, usually from the same subnet, with a low count of requests made to the honeypots, is a strong indicator of automated scanning.