Password spraying surge exploits MFA gaps
🔐 Huntress reported a 155x increase in password spraying in H1 2026, driven by a campaign abusing Azure CLI and IPv6 BYOIP ranges from LSHIY LLC. The attacker leveraged reused credentials and the deprecated ROPC OAuth grant to bypass MFA protections that were not applied to this flow. Rampant login attempts led to dozens of compromises while attackers rotated providers and IP ranges to evade blocking. Huntress recommends disabling ROPC, enforcing broad MFA and conditional access, and limiting Azure CLI access to necessary admins.
