Callum Stewart

Director (Offensive Security Services)

As a Technical Team Manager with over ten years’ security experience, Callum has a wide range of experience in several technical roles.

Talk to an expert

Highlights

Career highlights

‍

As a Technical Team Manager with over ten years’ security experience, Callum has a wide range of experience in several technical roles. His role at Bastion Security focuses on technical testing, as well as configuration and design reviews. Callum covers a wide range of testing, including penetration testing of websites, applications and APIs, firewall configuration reviews, host security configuration reviews, external perimeter reviews and application configuration reviews.

‍

Cyber security news

Latest advisories

Stay ahead of emerging threats with our expert blog posts, research, and industry updates.

WatchGuard Access Points — Multiple issues

Stephen Shkardoon recently found multiple issues in WatchGuard Access Points which result in remote code execution.

Teracue ENC-400 — Multiple issues

Stephen Shkardoon found multiple issues in the Teracue ENC-400 hardware, including a pre-authentication remote code execution vulnerability.

ASP.NET Boilerplate — Input Validation vulnerability

Claudio Contin found an input validation issue with ABP 4.2.

Discover our services

We have the tools to pinpoint risks

Whether it’s hidden vulnerabilities or patterns you might miss, we help you stay one step ahead and make confident, informed decisions. Understand how our services can help your business uncover critical risks

Talk to an expert

Employee Cyber Training & Awareness

Your people are your first line of defence. Our cyber training builds awareness, sharpens instincts and turns everyday staff into assets.

Advisory

When clarity is critical and stakes are high, our advisory services deliver strategic, executive-level security expertise that empowers decision-making

Are you experiencing a security breach?

Incident Response

+64 4 281 7534