Massive DDoS attacks a growing threat to VoIP services. Check Point got in the anti-botnet mood last week with a new product it claims will detect and stop botnets. IBM last week acquired Q1 Labs and McAfee announcing a deal to acquire NitroSecurity.com. The hot buy: Security information event management companies.com/SIEM is an increasingly important tool. But everything in the tech industry seems to be a work in progress, and EMC/RSA earlier this year bought NetWitness, which specialized in detection of stealthy attacks.”]