"CISOs around the globe recognise the importance of being adequately prepared for breaches, as the cost, complexity and frequency of cybersecurity attacks continues to exponentially increase," said AttackIQ chief commercial officer Carl Wright.
"Ross has a proven track record of helping organisations in EMEA and APJ invest strategically in cybersecurity technology, partnerships, and practice enablement. We look forward to continuing to help security and risk leaders validate their investments and gain confidence with a threat-informed defence."
Brewer has more than 35 years of sales and management experience with technology organisations.
Before the promotion he served as the company's strategic advisor for EMEA, and helped launch AttackIQ's Academy in EMEA and APJ to provide security practitioners with free advanced training.
Brewer joined the company from LogRhythm, where he spent 12 years as vice president and managing director for EMEA.
He held a similar role at LogLogic, and previously worked in enterprise sales at NetIQ, PentaSafe and Symantec.
"AttackIQ's strong international growth is a direct result of its industry-leading platform, and I am excited to be joining the executive management team to continue helping organisations in these regions drive toward cybersecurity excellence," said Brewer.
"As recently noted by Gartner, breach and attack simulation is in the list of top security and risk management trends of 2021 due to its ability to help proactively identify and resolve gaps in security postures.
"The acceleration of c-suite leaders adopting a threat-informed defence and purple team construct with the help of AttackIQ is a direct result of leaders needing a higher level of confidence in their defensive posture."
AttackIQ's customers in Brewer's regions include Bupa, BT, and a number of ministries within unspecified governments.