MQSeries.net is the site to visit for WebSphere MQ (formerly MQSeries) topics.
They have a forum with very knowledgeable people.
One of the must-read topics is MQSeries.net :: View topic – NOT running amqcrsta as ‘mqm’… that points to a very nice IBM WebSphere MQ Security presentation (including a 50 minute YouTube video) that Martyn Ruks presented on EUSecWest 08 (an older version of the presentation is from DefCon 15) who in 2006 did a very nice piece of security research on the SNA protocol and now has a series of publications on WebSphere MQ security.
The posting does not link the the paper that goes with the conference (that he wrote with Alex Pratt), which has much more in depth information than the presentation itself. Recommended reading!
–jeroen
via: MQSeries.net :: View topic – NOT running amqcrsta as ‘mqm’…
The Wiert Corner - irregular stream of stuff 