BlackFog Strengthens Leadership Team with Strategic Appointments

San Francisco, CA—July 24, 2024– BlackFog, the leader in ransomware protection and anti data exfiltration (ADX), today announced it has made new appointments to strengthen its leadership team as it witnesses significant growth. John Sarantakes has joined as Chief Revenue Officer, and Mark Griffith has been appointed as Vice President of Strategic Sales.

As one of its founding team members, CMO Brenda Robb has also been promoted to President of BlackFog. As executive director of the company, Brenda led the expansion of the company into Northern Ireland, where BlackFog has now established R&D headquarters. As President, Brenda’s strong leadership skills and counsel will be leveraged with BlackFog’s expansion throughout North America.

“As CMO, Brenda has spearheaded our marketing and communications strategy as BlackFog has launched in new territories and markets, while building a strong brand presence for our pioneering ADX technology.” says Dr. Darren Williams, CEO and Founder, BlackFog. “Brenda is instrumental to BlackFog’s success, and I am thrilled she is taking on the role of President in addition to leading our marketing operations.”

With over 28 years in technology sales, John Sarantakes will play a pivotal role as CRO in driving global sales through direct sales and the development of a strong channel. He will also target sales growth across State, Federal, Local Government and Education sectors.

Previously at InMotion Software, John served as Senior Vice President of Strategy and Business Development. He has also held positions as Executive Vice President at Headspring Systems, Senior Vice President of Sales and General Manager of EMEA at Absolute Software and National Sales Director at Dell.

Mark Griffith was also appointed as Vice President of Strategic Sales at BlackFog. Griffith, who has more than 30 years of experience in strategic leadership and innovation, will lead BlackFog efforts to develop partnerships with MSPs and MSSPs, to secure customers in State, Local and Government agencies, and continue to work alongside customers on a tactical and operational standpoint.

“We’re thrilled with the appointments of both John and Mark, and we know they will be great assets to both the company and it’s customers”, says Dr. Darren Williams, CEO and Founder, BlackFog. He continues, “Mark is a results-focused and motivated individual who will deliver unprecedented value to our team. John is a respected colleague who brings years of results-driven experience to the table, critical as we target new territories and sectors.

These appointments lay the foundation for BlackFog’s next stage of rapid growth. As ransomware threats escalate, the demand for data protection and anti data exfiltration is at an all-time high. Organizations are seeking new effective solutions to help them protect their systems and data from ransomware attacks.

BlackFog is the category-defining vendor in anti data exfiltration (ADX). Founded in 2015, the company invented ADX on the thesis that the endpoint is the only control point capable of stopping data from leaving an organization, an architectural bet that has now been validated across three exfiltration vectors: ransomware, shadow AI, and autonomous AI agents. BlackFog’s endpoint-native platform protects more than 500 enterprises, government agencies, and critical infrastructure operators worldwide. 

The company is the publisher of the annual State of Ransomware report and the BlackFog/Sapio Shadow AI Research, the most-cited primary research in the category. BlackFog’s recognition includes the teiss Awards 2026, the AI Excellence Award 2026, the Cybersecurity Excellence Awards 2026, and the Cybersecurity Breakthrough Award. Headquartered in San Francisco with international operations in London and Belfast. Learn more at blackfog.com.