A significant chunk of the exploitation attempts targeting a newly disclosed security flaw in Ivanti Endpoint Manager Mobile (EPMM) can be traced back to a single IP address on bulletproof hosting infrastructure offered by PROSPERO. Threat intelligence firm GreyNoise said it recorded 417 exploitation sessions from 8 unique source IP addresses between February 1 and 9, 2026. An estimated 346 exploitation sessions have originated from 193.24.123[.]42, accounting for 83% of all attempts. The malicious activity is designed to exploit CVE-2026-1281 (CVSS scores: 9.8), one of the two critical security vulnerabilities in EPMM, along with CVE-2026-1340 that could be exploited by an attacker to achieve unauthenticated remote code execution. Late last month, Ivanti acknowledged it's aware of a…