TSUBAME Report Overflow (Apr-Jun 2023)

The TSUBAME Report Overflow (Apr–Jun 2023) analyzes global internet scan trends observed by expanded TSUBAME sensors now deployed across 17 regions, comparing Japan with overseas locations and highlighting regional differences in scan volumes. Consistently targeted ports include 23/TCP (Telnet), 6379/TCP (Redis), 22/TCP (SSH), 80/TCP (HTTP), along with 445/TCP, 3389/TCP, 5555/TCP, and 37215/TCP, indicating broad interest in common services. While no special alerts were issued this quarter, the report underscores the importance of multi-point monitoring to detect unusual changes and better understand scanner interests.