Volunteer penetration tester - Matte Black Magic Mug

Meet the Volunteer Penetration Tester Matte Black Magic Mug—a heat-activated coffee mug that turns your drink break into a tiny security demonstration. It starts with a sleek black matte finish when empty, and reveals a cheerful print the moment your hot beverage meets its surface. Perfect for testers, developers, and anyone who loves a playful desk surprise.

Key Features & Design

• Material: Ceramic
• Finish: Black matte finish when cold; reveals the print when exposed to hot liquids
• Dimensions: Height 3.85" (9.8 cm), Diameter 3.35" (8.5 cm)
• Origin & Printing: Made in China. Printed in the USA and EU
• Care: Do not microwave or dishwasher to protect the coating
• Note on opacity: In some instances the coating might not be 100% opaque and an outline of the design might peek through a little

Add this playful mug to your workspace for a daily reveal that’s practically a conversation starter. It’s a thoughtful gift for security-minded teammates, coffee lovers, and anyone who appreciates a dash of humor with their caffeine.