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Ariella Dreyfuss

Ariella Dreyfuss

Ariella, originally from England, advises international and Israeli entrepreneurs and companies engaged in a wide range of high tech activities, including, communications, life sciences, medical devices, internet, financial services and advertising. 

From incorporation through to an exit, Ariella skilfully guides companies in drafting and negotiating multi-layered corporate and commercial agreements, establishing strategic partnerships, raising capital, consummating complex mergers and acquisitions, all the time considering each companies’ unique commercial concerns.


Ariella also has significant experience in the field of infrastructure and project finance and advises leading infrastructure companies engaged in transportation, electricity, water, solar energy and gas.


Before joining Barnea & Co., Ariella served as a research assistant to Professor Barak-Erez (current Supreme Court Justice), and a foreign clerk to Supreme Court Justice Beinisch.


Ariella was endorsed by the prestigious ranking guide, Chambers & Partners, as one of Israel’s leading lawyers in the field of Corporate/M&A High-tech (Chambers Global 2016).


University of Birmingham, England (LL.B Hons.), 2005


Member of Israel Bar Association since 2008

News and updates - Ariella Dreyfuss:

June 14, 2017

Big Data, Big Legal Minefield

The speed in which vast and complex “bits” can now be processed is staggering. This information is being collected, stored and analyzed to drive efficiency and create actionable intelligence – translating into increased revenues. In short, in today’s world data is power.  


For those engaged in technologies that collect data sets and use Machine Learning and Deep Learning techniques, there are a minefield of legal issues to avoid.



Privacy, has long been established as a right, and despite popular belief it is not dead (yet).


An individual’s consent is usually required before Personally Identifiable Information (PII) about him or her can be stored, used or shared. However, one of the main hurdles for those who collect data is that such information is often amassed from across the globe. Crawlers and scrapers are being employed to scour data from all over the web, but different jurisdictions have different laws, regulations and interpretations. What constitutes PII or consent in one country may not be the same in the next.


These laws are also evolving, for example Israel’s Protection of Privacy Law, (1981), is soon to be bolstered by the Protection of Privacy Regulations (Data Security) 2017 (the Regulations) which come into force in March 2018, and the new European General Data Protection Regulations (GDPR) come into force in May 2018. In addition, different sectors such as banking and healthcare have their own privacy provisions.


The breadth of laws to consider poses a serious challenge for those engaged in Big Data.


Not only do we usually have the right to object to our data being collected, in certain circumstances we also have the right of erasure (AKA the right to be forgotten), and can demand that our information be deleted at a later stage. This means that companies that hold PII need to ensure they have the ability to locate and erase such information further down the line.


Many jurisdictions require the holder of data to register a database with the local privacy regulator – in Israel the Israeli Law, Information and Technology Authority (ILITA). Given the value of data it is unsurprising that the news is full of stories of database hackings.


Under the Regulations, Database Owners are required to immediately notify the ILITA and, in some instances, data subjects upon serious security breaches. While this increases transparency, it also increases exposure to litigation and class actions, and can be a PR nightmare. Accordingly, the security concerns around PII should not be trivialized. 


A popular way of avoiding these privacy mines is to anonymize and aggregate all data obtained and store as little of it as possible.


With both the GDPR and Regulations coming into force early next year, the former carrying significant fines (the maximum being the greater of €20million or 4% of the total worldwide annual turnover for the preceding financial year) and the latter carrying civil and criminal liability, anyone engaged in Big Data in Israel should be taking steps to mitigate risks and ensure compliance. 



Enterprises understand that although data is power, holding it tight to their chest is not always the best way to leverage it and realize its economic potential; so such information is often shared with third parties. Take the autonomous driving space for example, car manufacturers such as BMW may share data garnered pertaining to vehicle performance and driver safety and behavior with the OEMs developing their cars’ autonomous driving capabilities. These OEMs may then combine BMW’s information with their existing data sources and/or create a Deep Learning model based on BMW’s information to achieve this goal. The question then arises as to who owns what in the co-mingled data or the conclusions derived from the model.


Data is usually protected by copyright laws, but when it is shared it is paramount to clearly and contractually define each party’s rights and obligations, including ownership, scope of license, confidentiality, limitation on liability and consequences of termination of the relationship.



Data is being seen less as a byproduct and more and more as an asset in and of itself. Some recent acquisitions clearly suggest that the potential of the target to acquire data can be the driving force behind the deal. Think of Microsoft’s $26 billion purchase of LinkedIn last year, which brought it an enormous amount of data about users’ work, skills and interests. If data is indeed power and can be used to suppress competition, then legislators and anti trust regulators will soon sit up and reconsider how they calculate market power and categorize restrictive trade practices, affecting how data companies behave and current relationships.



Algorithms dissect data and spew out conclusions. Allegedly this enhances our ability to make evidence-based decisions and avoid human bias. However, an algorithm is only as impartial as its author or the data sets it works with. There have been various high profile instances of technology discriminating, for example Google Photos tagged several African-American users as gorillas (experts say this was probably due to insufficient representation of African-Americans in the database used to train the computer vision algorithm), and Microsoft’s artificial intelligence bot “Tay”, designed to learn from the behaviors of Twitter users, went rogue last year after processing racist tweets.


There are a plethora of laws prohibiting discrimination and in the event your algorithm falls foul of these, reliance on raw data rather than intent will not absolve you of liability.


With the proliferation of Big Data in the last few years, the role that data is playing in replacing human decision making and the move towards a connected world, I am sure we have not heard the last word from our legislators and regulators, and the legal landscape on which businesses are being built will continue to shift. For those engaged in Big Data even in today’s legal world, you better be careful where you tread.


“Originally published on the Dun's 100 website”

May 24, 2017

Big Data, Big Legal Minefield

Adv. Ariella Dreyfuss in an article in Globes Dun's 100 discussing the legal minefields to be avoided when engaged in big data technologies.

May 7, 2017

Tel Aviv University Innovation Conference

For the second year, Barnea & Co. is taking part in the Tel Aviv University Innovation Conference. In the framework of the conference, Adv. Ariella Dreyfuss, Adv. Yuval Lazi and Dr. Dotan Baruch, Partners in our firm, will judge in the start-up competition in the Fintech, Gaming and IoT sectors. Adv. Micky Barnea, our Managing Partner, is lecturing on the subject of the legal challenges entailed in late staged startups and will judge in the competition final with other mentors from Shazam, Prezi, Capsula, Strauss Group and IAI. Adv. Yuval Lazi is also participating in a panel discussion on funding a start-up, together with a representative of the Office of the Chief Scientist and the CEO of "Cockpit", El-Al's start-up support program.

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