CrowdStrike CEO George Kurtz has never been afraid of calling things as he sees them, especially when it comes to two of his top foes: Microsoft and SentinelOne.

CrowdStrike and Microsoft are recognized by research ­ firm Gartner as having the best endpoint protection platforms, but Kurtz said Microsoft suffers from a lack of focus on security and architectural issues with how it goes about authenticating credentials.

SentinelOne, meanwhile, just completed the biggest cybersecurity IPO of all time, but Kurtz said the endpoint security upstart is “buying growth” and struggles to have its technology perform at scale. SentinelOne responded to Kurtz’s allegations in detail while Microsoft declined to directly engage with Kurtz’s claims.

Here’s why Kurtz thinks CrowdStrike has the edge over its biggest rivals.