Coldsurge is an offensive cyber-security consultancy based in London. We help organisations to protect themselves by finding where their weak spots are before adversaries do, and we do it by relentlessly researching, refining and testing the latest attack techniques. We provide a range of penetration testing services for infrastructure, web applications, cloud environments and more, always led by CREST or OffSec-certified specialists. We also offer low-cost vulnerability assessments for small and medium-sized businesses, both on a one-off and regular basis.