„The duel of the AI giants and its consequences for IT security“
Guest article for Connect Professional, 28.03.2025
„For over nine years, we have been a reliable partner for corporations and SMEs in all IT security matters. Our biggest advantage: we know how attackers think - because we act as attackers ourselves. “
Selected press reports
„MalRDP - New threat via Remote Desktop Protocol
How attackers get into the system in two seconds“
Guest article for SecurityInsider, 07.07.2025
„Germany's youngest professional hacker: "I've always found it interesting to find the bugs in the system“
Handelsblatt, 24.11.2020
About us
"We stand for independent, quality-oriented IT security that works in everyday life and is effective in an emergency."
We are an independent IT security consulting and auditing firm—with over nine years of experience and more than 400 projects in highly regulated industries. Our expertise begins where technology providers, large system integrators, or international consulting firms reach their limits. Our specialty is manual IT security audits.
Because we know exactly how attackers operate, think, and actually exploit vulnerabilities, we translate this knowledge into effective, practical security measures. This results in solutions that are technically sound, compliant with regulations, and feasible in everyday operations. For corporate groups and operators of Critical Infrastructures, we’re called upon when it’s crucial to understand the actual tactics of attackers—through manual security audits and targeted IT security consulting. For small and medium-sized businesses, we act as a long-term strategic partner: We take responsibility for our clients’ entire IT security posture and ensure that IT security operates stably and reliably.
Known from
The DNA of KALWEIT ITS
One-Stop IT Security
One team—from technical audits and strategic consulting to raising awareness among your employees. This is how we provide comprehensive support to companies in highly regulated industries as well as small and medium-sized businesses on all aspects of IT security.
Certified excellence
Our company is ISO/IEC27001 certified and our exclusively permanent experts have recognized certifications in the field of IT security and penetration testing. No sub-contractors, no freelancers – no compromises.
We think like attackers. And act like partners.
We are passionate about IT security. We test thoroughly, document clearly and continuously develop ourselves further.
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"From 2026 to 2029, we will be the primary provider of IT security (Rank 1) for Germany's second-largest statutory health insurance provider."
Why companies rely on KALWEIT ITS
Consulting approach
Effective cybersecurity is needs-based, understandable and practicable. Our expertise is based on the essentials: the attacker’s perspective.
Customer focus
We provide independent and product-neutral advice and are always available to you personally – without a hotline or ticket system.
Industry understanding meets IT expertise
Whether healthcare, finance, banking, energy or Critical Infrastructures – we know the regulatory requirements and operational realities of your industry.
Reliability, commitment and loyalty as partners
Supported by Hanseatic business values, we stand for reliability, honesty and loyalty as partners – so that IT security and trust go hand in hand.
Ihre Ansprechpartner
Sicherheit ist Vertrauenssache. Bei uns sprechen Sie nicht mit einem Ticketsystem – sondern direkt mit erfahrenen Experten.
Philipp Kalweit ist Gründer und geschäftsführender Gesellschafter der KALWEIT ITS. Sein Beratungsschwerpunkt liegt auf Cybersecurity im Banken- und Versicherungsumfeld sowie bei kritischen Infrastrukturen (KRITIS). Seine unternehmerische Laufbahn begann mit 16 Jahren, als er mit einer Ausnahmegenehmigung des Amtsgerichts sein Hobby zum Beruf machte. Ein Jahr später gründete er das heutige Unternehmen. 2019 wurde er von DIE ZEIT als „Hamburger des Monats“ ausgezeichnet, auf der Titelseite des FOCUS-Magazins porträtiert und in die Forbes-Liste „30 Under 30“ aufgenommen.
S. Philipp Kalweit
Geschäftsführender Gesellschafter
Dipl.-Wirtsch.-Ing. Günther Paprocki ist seit 2024 geschäftsführender Gesellschafter der KALWEIT ITS und verantwortet die Bereiche Operations und Personal sowie die organisatorische Weiterentwicklung des Unternehmens. Zuvor war er in verschiedenen Positionen bei Sharp, Philips und Cisco tätig und wirkte an der Einführung und dem Aufbau bedeutender Technologien mit, darunter frühe Mobilfunknetze und Internetinfrastrukturen. Heute bringt der gebürtige Münchner seine langjährige Erfahrung in Personalführung, Prozessgestaltung und Technologieentwicklung in die Weiterentwicklung unseres Unternehmens ein.
Günther Paprocki
Geschäftsführender Gesellschafter