MSP cybersecurity news digest, September 1, 2025

Executive summary: This report aggregates multiple active and high-impact incidents: Orange Belgium disclosed a July breach exposing approximately 850,000 customers' personal and SIM-related data; Colt Technology Services suffered a Warlock ransomware intrusion with customer documents stolen and auctioned; Miljödata (an IT supplier for Swedish municipalities) experienced a ransomware event disrupting services across 200+ regions; researchers uncovered the ZipLine social‑engineering campaign delivering MixShell in-memory malware via business contact forms; and ShadowSilk — a tracked threat cluster with APT-like behavior — has conducted targeted data-exfiltration operations across government and critical sectors in APAC and Central Asia.