Get 50GB of Free, Encrypted Online Storage from Tresorit



Wow!  Act fast to get 50GB for free for life!  This is an incredible offer!

Windows (Mac, Android, iOS coming soon): There are a ton of online syncing and storage services, but not all of them locally encrypt your data for higher security. Just out of limited beta, Tresorit is a new Dropbox alternative with client-side encryption. The company offers 5GB of free space, but for a limited time Lifehacker readers can grab 50GB free for life.

Tresorit’s biggest selling point is the strong security. Your files and folders are encrypted before they’re uploaded to the cloud. To get technical about it:

Files are encrypted with AES-256 before being uploaded to the cloud. Additional security is provided before upload by HMAC message authentication codes applied on SHA-512 hashes. Encrypted files are uploaded to the cloud using TLS-protected channels.

The company is also putting its money where its mouth is: On April 15, Tresorit is inviting the world’s hackers to try to break its encryption and win $10,000. So Tresorit is pretty confident in its security claims.

The Windows software (Mac, Android, and iOS versions coming before June) is also really easy to use. You can select any folder to be synced (as a “Tresor”), share folders with other users, and also adjust permissions of shared folders by user.

On the downside, there’s no web-based access for your files, people you share folders with will also need the software installed, and it takes a few seconds longer for your synced files to appear on another computer (probably because of the encryption that has to happen first). Other Dropbox alternatives with client-side encryption, SpiderOak and Wuala, have more features, but Tresorit’s interface is a lot more user-friendly. And it’s hard to beat 50GB of free encrypted space.

If you want to try it out, you’ll need to register via the link below to get the 50 gigs free. This offer is good until May 20.

Update: Some people are reporting only getting 5GB. Tresorit has fixed the glitch, so it should work fine now, but if you were one of these people, email and they’ll set you up with the 50GB. Also, you can follow @tresorit on Facebook or Twitter to be notified when Mac and mobile apps are available.


Easy access to your files

Upload files and folders to the cloud with a few clicks. Share them with anyone in seconds. We sync and update files automatically.



Client-side encryption

Tresorit secures your files and folders on your computer, before uploading to the cloud. Your encryption keys never leave your computer. This means noone can access your content if you don’t permit them, not even Tresorit.

Complete privacy

Security is not the only concern for cloud adopters – as long as your storage provider or an administrator can peek into your sensitive data, your privacy can be violated. This isn’t possible with Tresorit’s technology – your privacy is guaranteed.

  • Multi-layered security

    Tresorit applies only published, scrutinized, industry-standard security algorithms, every one of which exceeds the computing power of currently available hardware.

    Decrypting tresors without authorisation is mathematically unfeasible – it would take several lifetimes to crack one.

    Files are encrypted with AES-256 before being uploaded to the cloud. Additional security is provided before upload by HMAC message authentication codes applied on SHA-512 hashes. Encrypted files are uploaded to the cloud using TLS-protected channels.

  • Everything can be ‘tresored’

    Tresorit secures your files and folders on your computer, before uploading to the cloud. Your encryption keys never leave your computer. This means noone can access your content if you don’t permit them, not even Tresorit.


  • Shareable encryption

    Tresorit’s patented shareable encryption makes it possible to collaborate easily and securely. You can share any number of files with any number of users using only their email addresses, while the software takes care of synchronization and tracking file changes.


  • Powerful permission handling

    Permissions can be granted and revoked with a click. Tresorit allows you to set several distinct roles – reader, editor and manager. You are always in control of your data.



  • Andreas Kemi

    A  lifelong entrepreneur, Mr Kemi  was a co-founder of Scala Business Solutions N.V, a global mid-market ERP company listed on the AEX; also a founding shareholder in UCMS Pty, one of Australia’s leading independent business outsourcing firms with over 2700 staff, listed on the ASX and sold to Aegis Group in 2009. He started UCMS Group EMEA Ltd and was the founding investor and actively involved in building up Fathom Technology which merged with EPAM in 2004 to form the largest software outsourcer in the region. He was an early investor in Uproar (sold to Vivendi), LogMeIn (listed on NASDAQ) and Quinyx. Mr. Kemi is an early investor, actively involved on the Board of Tresorit.

  • Marton Szoke

    An entrepreneur and investor with a business background and solid technical experience. Founded several startups, the latest being Indextools, a software company specializing in enterprise on-demand web analytics software. In April 2008 Indextools got acquired by Yahoo! Inc. At the time of the acquisition, Indextools was recognized as one of the top five web analytics vendors world-wide by Forrester / Jupiter Research. Mr. Szőke served at Yahoo for three years to lead integration efforts and to realign Indextools’ business model.


  • Peter Tanczos

    He started his career as an investment analyst in 1993. Two years later he became a partner of the Euroventures private equity firm, running four consecutive successful venture capital and private equity programmes in Hungary and its neighbouring countries. Currently he is the Chairman of the board of Euroventures Venture Capital Fund Management Zrt, the manager of Euroventures IV. He served on the executive and supervisory boards of several companies of the Euroventures portfolio, supporting some of them in the capacity of an interim CEO as well. He currently heads the Communication Committee of the Hungarian Private Equity and Venture Capital Association.


  • Istvan Lam CEO

    István is the founder and CEO of Tresorit and one of the main inventors of Tresorit’s sharable encryption technology. He has achieved his degree in Computer Engineering at Budapest University of Technology and Economics (BUTE), specialized on cryptography engineering, with excellent grade. István received several awards, like youth Bolyai mathematical prize, Prize of Hungarian Young Innovation, GE Foundation Scholar-Leaders Award or the Hungarian Republic Scholarship multiple times. During his studies, he worked as a student teacher at BUTE, teaching calculus, probability theory and C/C programming, and worked in CrySys Laboratory at BUTE, doing research on security of distributed storage systems. Between 2008 and 2010 he was the CEO of Future Office Network Kft.

  • Szilveszter Szebeni CTO

    Computer Engineer MSc student at BME very talented in algorithms, complexity theory and programming. He received the Hungarian Republic Scholarship multiple times. He won many international programming competitions (ACM, ImagineCup etc.). He is also a problem writer for the Challenge 24 programming competition. He teaches Programming at BME.


  • Gyorgy Szilagyi CFO

    In his capacity as CFO, György oversees the financial and business planning, controller, treasury, investor relations, tax, information systems functions. He received an Accounting BA degree from Corvinus University, currently he is a graduate Finance MSc student at Corvinus University and a graduate student at EVK College for Advanced Studies. During his university years he earned a lot of awards, like GE Foundation Scholar Leader, Distinguished Faculty Scholarship for multiple times and CIBS Strategy Case Study Competiton I. place. Before joining Tresorit he was demonstrator at the Department of Finance and took an internship at FHB Bank Plc.


Advisory Board

  • Balazs Fejes  SVP, Global Head of Financial Services – EPAM


    Mr. Fejes became CTO of EPAM Systems in March of 2004 when Fathom Technology, a Hungarian software engineering firm which he co-founded and where he served as CTO, merged with EPAM Systems. In his present capacity, he ensures that all of EPAM Systems’ global offshore and nearshore software development centers are at the leading edge of industry standards for efficiency and quality. Prior to co-founding Fathom Technology Mr. Fejes was a chief software architect/line manager with Microsoft Great Plains (Microsoft Business Solutions). He also served as chief software architect of Scala Business Solutions. He is the recipient of numerous awards for programming excellence and has worked extensively in the US and Russia.

  • Gabor Fejer CIO – FHB Bank Plc

    Before joining FHB Bank, Gábor has been taking various positions at several IT companies (IQSOFT, SAS Institute, Pylon, IBM), while between 2005-2011 he was Director of Professional Services at IND Group (banking security company). Gábor helps Tresorit with his relevant experience in project management, business development and  IT security.


  • Dr. Levente Buttyan  Head of CrySys Laboratory

    Levente Buttyán received the M.Sc. degree in Computer Science from the Budapest University of Technology and Economics (BME) in 1995, and earned the Ph.D. degree from the Swiss Federal Institute of Technology – Lausanne (EPFL) in 2002. In 2003, he joined the Department of Telecommunications at BME, where he currently holds a position as an
    Associate Professor and leads the Laboratory of Cryptography and Systems Security (CrySyS). His main research interests are in the design and analysis of secure protocols and privacy enhancing mechanisms for wired and wireless networks. He also works on security in cloud computing, and mechanisms to defend against targeted cyber attacks on critical infrastructures.

  • Erno Duda  Founder, President & CEO – Solvo Biotechnology

    Founder and President of the Hungarian Biotechnology Association, a representative organization active in lobbying for the interests of its member companies and the biotechnology sector in Hungary. As a genuine entrepreneur, he has founded or co-founded 13 companies over the past 15 years, including a corporate finance consulting company focused on high-tech Hungarian start-ups, and Hungary’s largest online second-hand book store. He was Vice president of the American Chamber of Commerce in Hungary for 2 years, and President of the Junior Achievement Foundation Hungary from 1997 until 2006. Mr. Duda is a member of the Board of the Hungarian Association for Innovation. Besides running a course at the University of Szeged, he regularly holds presentations at conferences and various public events. He has been awarded the Order of Merit of the Republic of Hungary for his distinguished contribution to the development of the Hungarian biotechnology industry.

  • David Szabo

    Dávid helps Tresorit in market segmentation, user experience strategy and business model generation. Although David works for Microsoft, his view of the SaaS & Cloud market and opportunity is a technology-agnostic one and can be applied to any Cloud technologies or businesses. Follow David on




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