About Us
Meet the leadership team, customers, and the story behind Arenim.
Media appearances
Since 2010 the Arenim team & founders had 1,000+ media appearances.
On this page you can find some which we have selected.
Selected media articles
Hungary’s CryptTalk boosted by encryption controversy
CryptTalk was found to be secured to a very good standard and no practically exploitable vulnerabilities were found.
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Hungarian startup offers encryption with no backdoor key
Politico Europe on secure communications and encryption without backdoor access.
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Arenim Group launches new quantum platform
Coverage of the KvantPhone launch and the Arenim Group’s quantum-secure communication platform.
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Constellation Software acquires Arenim’s call-center business
Forbes Hungary on the exit: ArenimTel, the call-center software business, is acquired by Constellation Software Inc.
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Hungarian encryption pays off — and aims to be the first quantum-safe one
Telex G7 on Arenim Technologies and CryptTalk, the Hungarian encrypted communication system racing to become the world’s first quantum-safe solution.
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Untappable secure phone calls with no back door. Ever.
Jonathan Marks on CryptTalk’s end-to-end encrypted calls with perfect forward secrecy and no backdoor access.
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Arenim Technologies launches ‘quantum-resilient’ comms system
Budapest Business Journal on KvantPhone, Arenim’s post-quantum encryption system protecting communications against future quantum threats.
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A Hungarian mobile solution among the world’s 40 best mobile technology startup
HVG on Arenim’s CryptTalk ranked among the world’s 40 best mobile innovations.
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Success has a price, and you have to pay it
Sab Kun, CEO of Arenim Technologies, on the real cost of building a startup — years of unpaid 12–14 hour days behind the success.
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CryptTalk: honest craftsmanship wins it all
HWSW on Arenim Technologies’ encrypted VoIP service CryptTalk passing NCC Group’s independent audit of its end-to-end encryption.
Read article Arenim Technologies named startup of the year
HVG on Arenim Technologies winning the best startup of the year award.
Read article From CryptTalk to Arenim: the journey of Sab Kun’s startup
Forbes Hungary on Sab Kun, CryptTalk and the building of the Arenim group.
Read articleInterviews, videos and longer-form conversations
Forbes Deal Podcast 
Network Smith Podcast 
HVG Podcast 
Karizma Podcast 
Company Builders Podcast 
RTL Klub 
HírTV 
M1 (Hungarian National TV1) 
A long-form interview with Sab Kun by Forbes Hungary on the Arenim story, the exit, and what comes next.
(Sept 13, 2025)
From Bootstrapping to a Strategic Exit and the future of Arenim Group: Sab Kun, Co-Founder & Executive Chairman of Arenim Group (Oct 12, 2025).
HVG Podcast conversation with Sab Kun on secure software development, AI-first software delivery, and the discipline behind Arenim (April 28, 2025).
Sab Kun on the principles, mindset, and cultural foundations and the "Arenim Ten Commandments" that shaped their company (Dec 10, 2025).
A long-form interview with Sab Kun on Arenim and the acquisition of their Call Center Software business (ArenimTel) by Constellation Software Inc. (Dec 17, 2025).
CryptTalk and Sab Kun on the RTL Klub news program about their potential political ban after winning the Startup Innovation Award by the Academy of Science (April 12, 2016).
Sab Kun on HírTV covering secure communication issues and why the Hungarian Government tried to ban their undecryptable service, CryptTalk (April 6, 2016).
Sab Kun on M1 (Hungarian National TV1) discussing wiretapping scandals and how their award winning solution CryptTalk can eliminate eavesdropping (Jul 16, 2015).
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