Grsecurity

Grsecurity is an extensive security enhancement to the Linux kernel that defends against a wide range of security threats. In practice that means assessing, monitoring and responding to security threats on your behalf.

The natural audience is companies without a full security team. Alongside the main category they mention Security. As a very small company team themselves (1 to 10 people), they tend to serve customers of a similar scale best. You will probably talk to the people who build it, which is great until you need 24/7 support.

Grsecurity is based in Lancaster, Pennsylvania and around since 2008. Their site is grsecurity.net.

Things worth asking about: response times, what is included in monitoring, and reporting. Ask for a trial on your own data, not a canned demo.

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